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 #include <linux/kernel.h> 37 #include <linux/module.h> 38 #include <linux/init.h> 39 #include <linux/types.h> 40 #include <linux/err.h> 41 #include <linux/proc_fs.h> 42 #include <linux/backlight.h> 43 #include <linux/fb.h> 44 #include <linux/leds.h> 45 #include <linux/platform_device.h> 46 #include <acpi/acpi_drivers.h> 47 #include <acpi/acpi_bus.h> 48 #include <asm/uaccess.h> 49 #include <linux/input.h> 50 51 #define ASUS_LAPTOP_VERSION "0.42" 52 53 #define ASUS_HOTK_NAME "Asus Laptop Support" 54 #define ASUS_HOTK_CLASS "hotkey" 55 #define ASUS_HOTK_DEVICE_NAME "Hotkey" 56 #define ASUS_HOTK_FILE "asus-laptop" 57 #define ASUS_HOTK_PREFIX "\\_SB.ATKD." 58 59 /* 60 * Some events we use, same for all Asus 61 */ 62 #define ATKD_BR_UP 0x10 63 #define ATKD_BR_DOWN 0x20 64 #define ATKD_LCD_ON 0x33 65 #define ATKD_LCD_OFF 0x34 66 67 /* 68 * Known bits returned by \_SB.ATKD.HWRS 69 */ 70 #define WL_HWRS 0x80 71 #define BT_HWRS 0x100 72 73 /* 74 * Flags for hotk status 75 * WL_ON and BT_ON are also used for wireless_status() 76 */ 77 #define WL_ON 0x01 //internal Wifi 78 #define BT_ON 0x02 //internal Bluetooth 79 #define MLED_ON 0x04 //mail LED 80 #define TLED_ON 0x08 //touchpad LED 81 #define RLED_ON 0x10 //Record LED 82 #define PLED_ON 0x20 //Phone LED 83 #define GLED_ON 0x40 //Gaming LED 84 #define LCD_ON 0x80 //LCD backlight 85 #define GPS_ON 0x100 //GPS 86 87 #define ASUS_LOG ASUS_HOTK_FILE ": " 88 #define ASUS_ERR KERN_ERR ASUS_LOG 89 #define ASUS_WARNING KERN_WARNING ASUS_LOG 90 #define ASUS_NOTICE KERN_NOTICE ASUS_LOG 91 #define ASUS_INFO KERN_INFO ASUS_LOG 92 #define ASUS_DEBUG KERN_DEBUG ASUS_LOG 93 94 MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary"); 95 MODULE_DESCRIPTION(ASUS_HOTK_NAME); 96 MODULE_LICENSE("GPL"); 97 98 /* WAPF defines the behavior of the Fn+Fx wlan key 99 * The significance of values is yet to be found, but 100 * most of the time: 101 * 0x0 will do nothing 102 * 0x1 will allow to control the device with Fn+Fx key. 103 * 0x4 will send an ACPI event (0x88) while pressing the Fn+Fx key 104 * 0x5 like 0x1 or 0x4 105 * So, if something doesn't work as you want, just try other values =) 106 */ 107 static uint wapf = 1; 108 module_param(wapf, uint, 0644); 109 MODULE_PARM_DESC(wapf, "WAPF value"); 110 111 #define ASUS_HANDLE(object, paths...) \ 112 static acpi_handle object##_handle = NULL; \ 113 static char *object##_paths[] = { paths } 114 115 /* LED */ 116 ASUS_HANDLE(mled_set, ASUS_HOTK_PREFIX "MLED"); 117 ASUS_HANDLE(tled_set, ASUS_HOTK_PREFIX "TLED"); 118 ASUS_HANDLE(rled_set, ASUS_HOTK_PREFIX "RLED"); /* W1JC */ 119 ASUS_HANDLE(pled_set, ASUS_HOTK_PREFIX "PLED"); /* A7J */ 120 ASUS_HANDLE(gled_set, ASUS_HOTK_PREFIX "GLED"); /* G1, G2 (probably) */ 121 122 /* LEDD */ 123 ASUS_HANDLE(ledd_set, ASUS_HOTK_PREFIX "SLCM"); 124 125 /* Bluetooth and WLAN 126 * WLED and BLED are not handled like other XLED, because in some dsdt 127 * they also control the WLAN/Bluetooth device. 128 */ 129 ASUS_HANDLE(wl_switch, ASUS_HOTK_PREFIX "WLED"); 130 ASUS_HANDLE(bt_switch, ASUS_HOTK_PREFIX "BLED"); 131 ASUS_HANDLE(wireless_status, ASUS_HOTK_PREFIX "RSTS"); /* All new models */ 132 133 /* Brightness */ 134 ASUS_HANDLE(brightness_set, ASUS_HOTK_PREFIX "SPLV"); 135 ASUS_HANDLE(brightness_get, ASUS_HOTK_PREFIX "GPLV"); 136 137 /* Backlight */ 138 ASUS_HANDLE(lcd_switch, "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */ 139 "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */ 140 "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */ 141 "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */ 142 "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */ 143 "\\_SB.PCI0.LPCB.EC0._Q0E", /* P30/P35 */ 144 "\\_SB.PCI0.PX40.Q10", /* S1x */ 145 "\\Q10"); /* A2x, L2D, L3D, M2E */ 146 147 /* Display */ 148 ASUS_HANDLE(display_set, ASUS_HOTK_PREFIX "SDSP"); 149 ASUS_HANDLE(display_get, "\\_SB.PCI0.P0P1.VGA.GETD", /* A6B, A6K A6R A7D F3JM L4R M6R A3G 150 M6A M6V VX-1 V6J V6V W3Z */ 151 "\\_SB.PCI0.P0P2.VGA.GETD", /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V 152 S5A M5A z33A W1Jc W2V G1 */ 153 "\\_SB.PCI0.P0P3.VGA.GETD", /* A6V A6Q */ 154 "\\_SB.PCI0.P0PA.VGA.GETD", /* A6T, A6M */ 155 "\\_SB.PCI0.PCI1.VGAC.NMAP", /* L3C */ 156 "\\_SB.PCI0.VGA.GETD", /* Z96F */ 157 "\\ACTD", /* A2D */ 158 "\\ADVG", /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */ 159 "\\DNXT", /* P30 */ 160 "\\INFB", /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */ 161 "\\SSTE"); /* A3F A6F A3N A3L M6N W3N W6A */ 162 163 ASUS_HANDLE(ls_switch, ASUS_HOTK_PREFIX "ALSC"); /* Z71A Z71V */ 164 ASUS_HANDLE(ls_level, ASUS_HOTK_PREFIX "ALSL"); /* Z71A Z71V */ 165 166 /* GPS */ 167 /* R2H use different handle for GPS on/off */ 168 ASUS_HANDLE(gps_on, ASUS_HOTK_PREFIX "SDON"); /* R2H */ 169 ASUS_HANDLE(gps_off, ASUS_HOTK_PREFIX "SDOF"); /* R2H */ 170 ASUS_HANDLE(gps_status, ASUS_HOTK_PREFIX "GPST"); 171 172 /* 173 * This is the main structure, we can use it to store anything interesting 174 * about the hotk device 175 */ 176 struct asus_hotk { 177 char *name; //laptop name 178 struct acpi_device *device; //the device we are in 179 acpi_handle handle; //the handle of the hotk device 180 char status; //status of the hotk, for LEDs, ... 181 u32 ledd_status; //status of the LED display 182 u8 light_level; //light sensor level 183 u8 light_switch; //light sensor switch value 184 u16 event_count[128]; //count for each event TODO make this better 185 struct input_dev *inputdev; 186 u16 *keycode_map; 187 }; 188 189 /* 190 * This header is made available to allow proper configuration given model, 191 * revision number , ... this info cannot go in struct asus_hotk because it is 192 * available before the hotk 193 */ 194 static struct acpi_table_header *asus_info; 195 196 /* The actual device the driver binds to */ 197 static struct asus_hotk *hotk; 198 199 /* 200 * The hotkey driver declaration 201 */ 202 static const struct acpi_device_id asus_device_ids[] = { 203 {"ATK0100", 0}, 204 {"", 0}, 205 }; 206 MODULE_DEVICE_TABLE(acpi, asus_device_ids); 207 208 static int asus_hotk_add(struct acpi_device *device); 209 static int asus_hotk_remove(struct acpi_device *device, int type); 210 static struct acpi_driver asus_hotk_driver = { 211 .name = ASUS_HOTK_NAME, 212 .class = ASUS_HOTK_CLASS, 213 .ids = asus_device_ids, 214 .ops = { 215 .add = asus_hotk_add, 216 .remove = asus_hotk_remove, 217 }, 218 }; 219 220 /* The backlight device /sys/class/backlight */ 221 static struct backlight_device *asus_backlight_device; 222 223 /* 224 * The backlight class declaration 225 */ 226 static int read_brightness(struct backlight_device *bd); 227 static int update_bl_status(struct backlight_device *bd); 228 static struct backlight_ops asusbl_ops = { 229 .get_brightness = read_brightness, 230 .update_status = update_bl_status, 231 }; 232 233 /* These functions actually update the LED's, and are called from a 234 * workqueue. By doing this as separate work rather than when the LED 235 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 236 * potentially bad time, such as a timer interrupt. */ 237 static struct workqueue_struct *led_workqueue; 238 239 #define ASUS_LED(object, ledname) \ 240 static void object##_led_set(struct led_classdev *led_cdev, \ 241 enum led_brightness value); \ 242 static void object##_led_update(struct work_struct *ignored); \ 243 static int object##_led_wk; \ 244 static DECLARE_WORK(object##_led_work, object##_led_update); \ 245 static struct led_classdev object##_led = { \ 246 .name = "asus::" ledname, \ 247 .brightness_set = object##_led_set, \ 248 } 249 250 ASUS_LED(mled, "mail"); 251 ASUS_LED(tled, "touchpad"); 252 ASUS_LED(rled, "record"); 253 ASUS_LED(pled, "phone"); 254 ASUS_LED(gled, "gaming"); 255 256 struct key_entry { 257 char type; 258 u8 code; 259 u16 keycode; 260 }; 261 262 enum { KE_KEY, KE_END }; 263 264 static struct key_entry asus_keymap[] = { 265 {KE_KEY, 0x30, KEY_VOLUMEUP}, 266 {KE_KEY, 0x31, KEY_VOLUMEDOWN}, 267 {KE_KEY, 0x32, KEY_MUTE}, 268 {KE_KEY, 0x33, KEY_SWITCHVIDEOMODE}, 269 {KE_KEY, 0x34, KEY_SWITCHVIDEOMODE}, 270 {KE_KEY, 0x40, KEY_PREVIOUSSONG}, 271 {KE_KEY, 0x41, KEY_NEXTSONG}, 272 {KE_KEY, 0x43, KEY_STOP}, 273 {KE_KEY, 0x45, KEY_PLAYPAUSE}, 274 {KE_KEY, 0x50, KEY_EMAIL}, 275 {KE_KEY, 0x51, KEY_WWW}, 276 {KE_KEY, 0x5C, BTN_EXTRA}, /* Performance */ 277 {KE_KEY, 0x5D, KEY_WLAN}, 278 {KE_KEY, 0x61, KEY_SWITCHVIDEOMODE}, 279 {KE_KEY, 0x6B, BTN_TOUCH}, /* Lock Mouse */ 280 {KE_KEY, 0x82, KEY_CAMERA}, 281 {KE_KEY, 0x8A, KEY_TV}, 282 {KE_KEY, 0x95, KEY_MEDIA}, 283 {KE_KEY, 0x99, KEY_PHONE}, 284 {KE_END, 0}, 285 }; 286 287 /* 288 * This function evaluates an ACPI method, given an int as parameter, the 289 * method is searched within the scope of the handle, can be NULL. The output 290 * of the method is written is output, which can also be NULL 291 * 292 * returns 0 if write is successful, -1 else. 293 */ 294 static int write_acpi_int(acpi_handle handle, const char *method, int val, 295 struct acpi_buffer *output) 296 { 297 struct acpi_object_list params; //list of input parameters (an int here) 298 union acpi_object in_obj; //the only param we use 299 acpi_status status; 300 301 if (!handle) 302 return 0; 303 304 params.count = 1; 305 params.pointer = &in_obj; 306 in_obj.type = ACPI_TYPE_INTEGER; 307 in_obj.integer.value = val; 308 309 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); 310 if (status == AE_OK) 311 return 0; 312 else 313 return -1; 314 } 315 316 static int read_wireless_status(int mask) 317 { 318 unsigned long long status; 319 acpi_status rv = AE_OK; 320 321 if (!wireless_status_handle) 322 return (hotk->status & mask) ? 1 : 0; 323 324 rv = acpi_evaluate_integer(wireless_status_handle, NULL, NULL, &status); 325 if (ACPI_FAILURE(rv)) 326 printk(ASUS_WARNING "Error reading Wireless status\n"); 327 else 328 return (status & mask) ? 1 : 0; 329 330 return (hotk->status & mask) ? 1 : 0; 331 } 332 333 static int read_gps_status(void) 334 { 335 unsigned long long status; 336 acpi_status rv = AE_OK; 337 338 rv = acpi_evaluate_integer(gps_status_handle, NULL, NULL, &status); 339 if (ACPI_FAILURE(rv)) 340 printk(ASUS_WARNING "Error reading GPS status\n"); 341 else 342 return status ? 1 : 0; 343 344 return (hotk->status & GPS_ON) ? 1 : 0; 345 } 346 347 /* Generic LED functions */ 348 static int read_status(int mask) 349 { 350 /* There is a special method for both wireless devices */ 351 if (mask == BT_ON || mask == WL_ON) 352 return read_wireless_status(mask); 353 else if (mask == GPS_ON) 354 return read_gps_status(); 355 356 return (hotk->status & mask) ? 1 : 0; 357 } 358 359 static void write_status(acpi_handle handle, int out, int mask) 360 { 361 hotk->status = (out) ? (hotk->status | mask) : (hotk->status & ~mask); 362 363 switch (mask) { 364 case MLED_ON: 365 out = !(out & 0x1); 366 break; 367 case GLED_ON: 368 out = (out & 0x1) + 1; 369 break; 370 case GPS_ON: 371 handle = (out) ? gps_on_handle : gps_off_handle; 372 out = 0x02; 373 break; 374 default: 375 out &= 0x1; 376 break; 377 } 378 379 if (write_acpi_int(handle, NULL, out, NULL)) 380 printk(ASUS_WARNING " write failed %x\n", mask); 381 } 382 383 /* /sys/class/led handlers */ 384 #define ASUS_LED_HANDLER(object, mask) \ 385 static void object##_led_set(struct led_classdev *led_cdev, \ 386 enum led_brightness value) \ 387 { \ 388 object##_led_wk = (value > 0) ? 1 : 0; \ 389 queue_work(led_workqueue, &object##_led_work); \ 390 } \ 391 static void object##_led_update(struct work_struct *ignored) \ 392 { \ 393 int value = object##_led_wk; \ 394 write_status(object##_set_handle, value, (mask)); \ 395 } 396 397 ASUS_LED_HANDLER(mled, MLED_ON); 398 ASUS_LED_HANDLER(pled, PLED_ON); 399 ASUS_LED_HANDLER(rled, RLED_ON); 400 ASUS_LED_HANDLER(tled, TLED_ON); 401 ASUS_LED_HANDLER(gled, GLED_ON); 402 403 static int get_lcd_state(void) 404 { 405 return read_status(LCD_ON); 406 } 407 408 static int set_lcd_state(int value) 409 { 410 int lcd = 0; 411 acpi_status status = 0; 412 413 lcd = value ? 1 : 0; 414 415 if (lcd == get_lcd_state()) 416 return 0; 417 418 if (lcd_switch_handle) { 419 status = acpi_evaluate_object(lcd_switch_handle, 420 NULL, NULL, NULL); 421 422 if (ACPI_FAILURE(status)) 423 printk(ASUS_WARNING "Error switching LCD\n"); 424 } 425 426 write_status(NULL, lcd, LCD_ON); 427 return 0; 428 } 429 430 static void lcd_blank(int blank) 431 { 432 struct backlight_device *bd = asus_backlight_device; 433 434 if (bd) { 435 bd->props.power = blank; 436 backlight_update_status(bd); 437 } 438 } 439 440 static int read_brightness(struct backlight_device *bd) 441 { 442 unsigned long long value; 443 acpi_status rv = AE_OK; 444 445 rv = acpi_evaluate_integer(brightness_get_handle, NULL, NULL, &value); 446 if (ACPI_FAILURE(rv)) 447 printk(ASUS_WARNING "Error reading brightness\n"); 448 449 return value; 450 } 451 452 static int set_brightness(struct backlight_device *bd, int value) 453 { 454 int ret = 0; 455 456 value = (0 < value) ? ((15 < value) ? 15 : value) : 0; 457 /* 0 <= value <= 15 */ 458 459 if (write_acpi_int(brightness_set_handle, NULL, value, NULL)) { 460 printk(ASUS_WARNING "Error changing brightness\n"); 461 ret = -EIO; 462 } 463 464 return ret; 465 } 466 467 static int update_bl_status(struct backlight_device *bd) 468 { 469 int rv; 470 int value = bd->props.brightness; 471 472 rv = set_brightness(bd, value); 473 if (rv) 474 return rv; 475 476 value = (bd->props.power == FB_BLANK_UNBLANK) ? 1 : 0; 477 return set_lcd_state(value); 478 } 479 480 /* 481 * Platform device handlers 482 */ 483 484 /* 485 * We write our info in page, we begin at offset off and cannot write more 486 * than count bytes. We set eof to 1 if we handle those 2 values. We return the 487 * number of bytes written in page 488 */ 489 static ssize_t show_infos(struct device *dev, 490 struct device_attribute *attr, char *page) 491 { 492 int len = 0; 493 unsigned long long temp; 494 char buf[16]; //enough for all info 495 acpi_status rv = AE_OK; 496 497 /* 498 * We use the easy way, we don't care of off and count, so we don't set eof 499 * to 1 500 */ 501 502 len += sprintf(page, ASUS_HOTK_NAME " " ASUS_LAPTOP_VERSION "\n"); 503 len += sprintf(page + len, "Model reference : %s\n", hotk->name); 504 /* 505 * The SFUN method probably allows the original driver to get the list 506 * of features supported by a given model. For now, 0x0100 or 0x0800 507 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 508 * The significance of others is yet to be found. 509 */ 510 rv = acpi_evaluate_integer(hotk->handle, "SFUN", NULL, &temp); 511 if (!ACPI_FAILURE(rv)) 512 len += sprintf(page + len, "SFUN value : 0x%04x\n", 513 (uint) temp); 514 /* 515 * Another value for userspace: the ASYM method returns 0x02 for 516 * battery low and 0x04 for battery critical, its readings tend to be 517 * more accurate than those provided by _BST. 518 * Note: since not all the laptops provide this method, errors are 519 * silently ignored. 520 */ 521 rv = acpi_evaluate_integer(hotk->handle, "ASYM", NULL, &temp); 522 if (!ACPI_FAILURE(rv)) 523 len += sprintf(page + len, "ASYM value : 0x%04x\n", 524 (uint) temp); 525 if (asus_info) { 526 snprintf(buf, 16, "%d", asus_info->length); 527 len += sprintf(page + len, "DSDT length : %s\n", buf); 528 snprintf(buf, 16, "%d", asus_info->checksum); 529 len += sprintf(page + len, "DSDT checksum : %s\n", buf); 530 snprintf(buf, 16, "%d", asus_info->revision); 531 len += sprintf(page + len, "DSDT revision : %s\n", buf); 532 snprintf(buf, 7, "%s", asus_info->oem_id); 533 len += sprintf(page + len, "OEM id : %s\n", buf); 534 snprintf(buf, 9, "%s", asus_info->oem_table_id); 535 len += sprintf(page + len, "OEM table id : %s\n", buf); 536 snprintf(buf, 16, "%x", asus_info->oem_revision); 537 len += sprintf(page + len, "OEM revision : 0x%s\n", buf); 538 snprintf(buf, 5, "%s", asus_info->asl_compiler_id); 539 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); 540 snprintf(buf, 16, "%x", asus_info->asl_compiler_revision); 541 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); 542 } 543 544 return len; 545 } 546 547 static int parse_arg(const char *buf, unsigned long count, int *val) 548 { 549 if (!count) 550 return 0; 551 if (count > 31) 552 return -EINVAL; 553 if (sscanf(buf, "%i", val) != 1) 554 return -EINVAL; 555 return count; 556 } 557 558 static ssize_t store_status(const char *buf, size_t count, 559 acpi_handle handle, int mask) 560 { 561 int rv, value; 562 int out = 0; 563 564 rv = parse_arg(buf, count, &value); 565 if (rv > 0) 566 out = value ? 1 : 0; 567 568 write_status(handle, out, mask); 569 570 return rv; 571 } 572 573 /* 574 * LEDD display 575 */ 576 static ssize_t show_ledd(struct device *dev, 577 struct device_attribute *attr, char *buf) 578 { 579 return sprintf(buf, "0x%08x\n", hotk->ledd_status); 580 } 581 582 static ssize_t store_ledd(struct device *dev, struct device_attribute *attr, 583 const char *buf, size_t count) 584 { 585 int rv, value; 586 587 rv = parse_arg(buf, count, &value); 588 if (rv > 0) { 589 if (write_acpi_int(ledd_set_handle, NULL, value, NULL)) 590 printk(ASUS_WARNING "LED display write failed\n"); 591 else 592 hotk->ledd_status = (u32) value; 593 } 594 return rv; 595 } 596 597 /* 598 * WLAN 599 */ 600 static ssize_t show_wlan(struct device *dev, 601 struct device_attribute *attr, char *buf) 602 { 603 return sprintf(buf, "%d\n", read_status(WL_ON)); 604 } 605 606 static ssize_t store_wlan(struct device *dev, struct device_attribute *attr, 607 const char *buf, size_t count) 608 { 609 return store_status(buf, count, wl_switch_handle, WL_ON); 610 } 611 612 /* 613 * Bluetooth 614 */ 615 static ssize_t show_bluetooth(struct device *dev, 616 struct device_attribute *attr, char *buf) 617 { 618 return sprintf(buf, "%d\n", read_status(BT_ON)); 619 } 620 621 static ssize_t store_bluetooth(struct device *dev, 622 struct device_attribute *attr, const char *buf, 623 size_t count) 624 { 625 return store_status(buf, count, bt_switch_handle, BT_ON); 626 } 627 628 /* 629 * Display 630 */ 631 static void set_display(int value) 632 { 633 /* no sanity check needed for now */ 634 if (write_acpi_int(display_set_handle, NULL, value, NULL)) 635 printk(ASUS_WARNING "Error setting display\n"); 636 return; 637 } 638 639 static int read_display(void) 640 { 641 unsigned long long value = 0; 642 acpi_status rv = AE_OK; 643 644 /* In most of the case, we know how to set the display, but sometime 645 we can't read it */ 646 if (display_get_handle) { 647 rv = acpi_evaluate_integer(display_get_handle, NULL, 648 NULL, &value); 649 if (ACPI_FAILURE(rv)) 650 printk(ASUS_WARNING "Error reading display status\n"); 651 } 652 653 value &= 0x0F; /* needed for some models, shouldn't hurt others */ 654 655 return value; 656 } 657 658 /* 659 * Now, *this* one could be more user-friendly, but so far, no-one has 660 * complained. The significance of bits is the same as in store_disp() 661 */ 662 static ssize_t show_disp(struct device *dev, 663 struct device_attribute *attr, char *buf) 664 { 665 return sprintf(buf, "%d\n", read_display()); 666 } 667 668 /* 669 * Experimental support for display switching. As of now: 1 should activate 670 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI. 671 * Any combination (bitwise) of these will suffice. I never actually tested 4 672 * displays hooked up simultaneously, so be warned. See the acpi4asus README 673 * for more info. 674 */ 675 static ssize_t store_disp(struct device *dev, struct device_attribute *attr, 676 const char *buf, size_t count) 677 { 678 int rv, value; 679 680 rv = parse_arg(buf, count, &value); 681 if (rv > 0) 682 set_display(value); 683 return rv; 684 } 685 686 /* 687 * Light Sens 688 */ 689 static void set_light_sens_switch(int value) 690 { 691 if (write_acpi_int(ls_switch_handle, NULL, value, NULL)) 692 printk(ASUS_WARNING "Error setting light sensor switch\n"); 693 hotk->light_switch = value; 694 } 695 696 static ssize_t show_lssw(struct device *dev, 697 struct device_attribute *attr, char *buf) 698 { 699 return sprintf(buf, "%d\n", hotk->light_switch); 700 } 701 702 static ssize_t store_lssw(struct device *dev, struct device_attribute *attr, 703 const char *buf, size_t count) 704 { 705 int rv, value; 706 707 rv = parse_arg(buf, count, &value); 708 if (rv > 0) 709 set_light_sens_switch(value ? 1 : 0); 710 711 return rv; 712 } 713 714 static void set_light_sens_level(int value) 715 { 716 if (write_acpi_int(ls_level_handle, NULL, value, NULL)) 717 printk(ASUS_WARNING "Error setting light sensor level\n"); 718 hotk->light_level = value; 719 } 720 721 static ssize_t show_lslvl(struct device *dev, 722 struct device_attribute *attr, char *buf) 723 { 724 return sprintf(buf, "%d\n", hotk->light_level); 725 } 726 727 static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr, 728 const char *buf, size_t count) 729 { 730 int rv, value; 731 732 rv = parse_arg(buf, count, &value); 733 if (rv > 0) { 734 value = (0 < value) ? ((15 < value) ? 15 : value) : 0; 735 /* 0 <= value <= 15 */ 736 set_light_sens_level(value); 737 } 738 739 return rv; 740 } 741 742 /* 743 * GPS 744 */ 745 static ssize_t show_gps(struct device *dev, 746 struct device_attribute *attr, char *buf) 747 { 748 return sprintf(buf, "%d\n", read_status(GPS_ON)); 749 } 750 751 static ssize_t store_gps(struct device *dev, struct device_attribute *attr, 752 const char *buf, size_t count) 753 { 754 return store_status(buf, count, NULL, GPS_ON); 755 } 756 757 /* 758 * Hotkey functions 759 */ 760 static struct key_entry *asus_get_entry_by_scancode(int code) 761 { 762 struct key_entry *key; 763 764 for (key = asus_keymap; key->type != KE_END; key++) 765 if (code == key->code) 766 return key; 767 768 return NULL; 769 } 770 771 static struct key_entry *asus_get_entry_by_keycode(int code) 772 { 773 struct key_entry *key; 774 775 for (key = asus_keymap; key->type != KE_END; key++) 776 if (code == key->keycode && key->type == KE_KEY) 777 return key; 778 779 return NULL; 780 } 781 782 static int asus_getkeycode(struct input_dev *dev, int scancode, int *keycode) 783 { 784 struct key_entry *key = asus_get_entry_by_scancode(scancode); 785 786 if (key && key->type == KE_KEY) { 787 *keycode = key->keycode; 788 return 0; 789 } 790 791 return -EINVAL; 792 } 793 794 static int asus_setkeycode(struct input_dev *dev, int scancode, int keycode) 795 { 796 struct key_entry *key; 797 int old_keycode; 798 799 if (keycode < 0 || keycode > KEY_MAX) 800 return -EINVAL; 801 802 key = asus_get_entry_by_scancode(scancode); 803 if (key && key->type == KE_KEY) { 804 old_keycode = key->keycode; 805 key->keycode = keycode; 806 set_bit(keycode, dev->keybit); 807 if (!asus_get_entry_by_keycode(old_keycode)) 808 clear_bit(old_keycode, dev->keybit); 809 return 0; 810 } 811 812 return -EINVAL; 813 } 814 815 static void asus_hotk_notify(acpi_handle handle, u32 event, void *data) 816 { 817 static struct key_entry *key; 818 u16 count; 819 820 /* TODO Find a better way to handle events count. */ 821 if (!hotk) 822 return; 823 824 /* 825 * We need to tell the backlight device when the backlight power is 826 * switched 827 */ 828 if (event == ATKD_LCD_ON) { 829 write_status(NULL, 1, LCD_ON); 830 lcd_blank(FB_BLANK_UNBLANK); 831 } else if (event == ATKD_LCD_OFF) { 832 write_status(NULL, 0, LCD_ON); 833 lcd_blank(FB_BLANK_POWERDOWN); 834 } 835 836 count = hotk->event_count[event % 128]++; 837 acpi_bus_generate_proc_event(hotk->device, event, count); 838 acpi_bus_generate_netlink_event(hotk->device->pnp.device_class, 839 dev_name(&hotk->device->dev), event, 840 count); 841 842 if (hotk->inputdev) { 843 key = asus_get_entry_by_scancode(event); 844 if (!key) 845 return ; 846 847 switch (key->type) { 848 case KE_KEY: 849 input_report_key(hotk->inputdev, key->keycode, 1); 850 input_sync(hotk->inputdev); 851 input_report_key(hotk->inputdev, key->keycode, 0); 852 input_sync(hotk->inputdev); 853 break; 854 } 855 } 856 } 857 858 #define ASUS_CREATE_DEVICE_ATTR(_name) \ 859 struct device_attribute dev_attr_##_name = { \ 860 .attr = { \ 861 .name = __stringify(_name), \ 862 .mode = 0 }, \ 863 .show = NULL, \ 864 .store = NULL, \ 865 } 866 867 #define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \ 868 do { \ 869 dev_attr_##_name.attr.mode = _mode; \ 870 dev_attr_##_name.show = _show; \ 871 dev_attr_##_name.store = _store; \ 872 } while(0) 873 874 static ASUS_CREATE_DEVICE_ATTR(infos); 875 static ASUS_CREATE_DEVICE_ATTR(wlan); 876 static ASUS_CREATE_DEVICE_ATTR(bluetooth); 877 static ASUS_CREATE_DEVICE_ATTR(display); 878 static ASUS_CREATE_DEVICE_ATTR(ledd); 879 static ASUS_CREATE_DEVICE_ATTR(ls_switch); 880 static ASUS_CREATE_DEVICE_ATTR(ls_level); 881 static ASUS_CREATE_DEVICE_ATTR(gps); 882 883 static struct attribute *asuspf_attributes[] = { 884 &dev_attr_infos.attr, 885 &dev_attr_wlan.attr, 886 &dev_attr_bluetooth.attr, 887 &dev_attr_display.attr, 888 &dev_attr_ledd.attr, 889 &dev_attr_ls_switch.attr, 890 &dev_attr_ls_level.attr, 891 &dev_attr_gps.attr, 892 NULL 893 }; 894 895 static struct attribute_group asuspf_attribute_group = { 896 .attrs = asuspf_attributes 897 }; 898 899 static struct platform_driver asuspf_driver = { 900 .driver = { 901 .name = ASUS_HOTK_FILE, 902 .owner = THIS_MODULE, 903 } 904 }; 905 906 static struct platform_device *asuspf_device; 907 908 static void asus_hotk_add_fs(void) 909 { 910 ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL); 911 912 if (wl_switch_handle) 913 ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan); 914 915 if (bt_switch_handle) 916 ASUS_SET_DEVICE_ATTR(bluetooth, 0644, 917 show_bluetooth, store_bluetooth); 918 919 if (display_set_handle && display_get_handle) 920 ASUS_SET_DEVICE_ATTR(display, 0644, show_disp, store_disp); 921 else if (display_set_handle) 922 ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp); 923 924 if (ledd_set_handle) 925 ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd); 926 927 if (ls_switch_handle && ls_level_handle) { 928 ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl); 929 ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw); 930 } 931 932 if (gps_status_handle && gps_on_handle && gps_off_handle) 933 ASUS_SET_DEVICE_ATTR(gps, 0644, show_gps, store_gps); 934 } 935 936 static int asus_handle_init(char *name, acpi_handle * handle, 937 char **paths, int num_paths) 938 { 939 int i; 940 acpi_status status; 941 942 for (i = 0; i < num_paths; i++) { 943 status = acpi_get_handle(NULL, paths[i], handle); 944 if (ACPI_SUCCESS(status)) 945 return 0; 946 } 947 948 *handle = NULL; 949 return -ENODEV; 950 } 951 952 #define ASUS_HANDLE_INIT(object) \ 953 asus_handle_init(#object, &object##_handle, object##_paths, \ 954 ARRAY_SIZE(object##_paths)) 955 956 /* 957 * This function is used to initialize the hotk with right values. In this 958 * method, we can make all the detection we want, and modify the hotk struct 959 */ 960 static int asus_hotk_get_info(void) 961 { 962 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 963 union acpi_object *model = NULL; 964 unsigned long long bsts_result, hwrs_result; 965 char *string = NULL; 966 acpi_status status; 967 968 /* 969 * Get DSDT headers early enough to allow for differentiating between 970 * models, but late enough to allow acpi_bus_register_driver() to fail 971 * before doing anything ACPI-specific. Should we encounter a machine, 972 * which needs special handling (i.e. its hotkey device has a different 973 * HID), this bit will be moved. A global variable asus_info contains 974 * the DSDT header. 975 */ 976 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus_info); 977 if (ACPI_FAILURE(status)) 978 printk(ASUS_WARNING "Couldn't get the DSDT table header\n"); 979 980 /* We have to write 0 on init this far for all ASUS models */ 981 if (write_acpi_int(hotk->handle, "INIT", 0, &buffer)) { 982 printk(ASUS_ERR "Hotkey initialization failed\n"); 983 return -ENODEV; 984 } 985 986 /* This needs to be called for some laptops to init properly */ 987 status = 988 acpi_evaluate_integer(hotk->handle, "BSTS", NULL, &bsts_result); 989 if (ACPI_FAILURE(status)) 990 printk(ASUS_WARNING "Error calling BSTS\n"); 991 else if (bsts_result) 992 printk(ASUS_NOTICE "BSTS called, 0x%02x returned\n", 993 (uint) bsts_result); 994 995 /* This too ... */ 996 write_acpi_int(hotk->handle, "CWAP", wapf, NULL); 997 998 /* 999 * Try to match the object returned by INIT to the specific model. 1000 * Handle every possible object (or the lack of thereof) the DSDT 1001 * writers might throw at us. When in trouble, we pass NULL to 1002 * asus_model_match() and try something completely different. 1003 */ 1004 if (buffer.pointer) { 1005 model = buffer.pointer; 1006 switch (model->type) { 1007 case ACPI_TYPE_STRING: 1008 string = model->string.pointer; 1009 break; 1010 case ACPI_TYPE_BUFFER: 1011 string = model->buffer.pointer; 1012 break; 1013 default: 1014 string = ""; 1015 break; 1016 } 1017 } 1018 hotk->name = kstrdup(string, GFP_KERNEL); 1019 if (!hotk->name) 1020 return -ENOMEM; 1021 1022 if (*string) 1023 printk(ASUS_NOTICE " %s model detected\n", string); 1024 1025 ASUS_HANDLE_INIT(mled_set); 1026 ASUS_HANDLE_INIT(tled_set); 1027 ASUS_HANDLE_INIT(rled_set); 1028 ASUS_HANDLE_INIT(pled_set); 1029 ASUS_HANDLE_INIT(gled_set); 1030 1031 ASUS_HANDLE_INIT(ledd_set); 1032 1033 /* 1034 * The HWRS method return informations about the hardware. 1035 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 1036 * The significance of others is yet to be found. 1037 * If we don't find the method, we assume the device are present. 1038 */ 1039 status = 1040 acpi_evaluate_integer(hotk->handle, "HRWS", NULL, &hwrs_result); 1041 if (ACPI_FAILURE(status)) 1042 hwrs_result = WL_HWRS | BT_HWRS; 1043 1044 if (hwrs_result & WL_HWRS) 1045 ASUS_HANDLE_INIT(wl_switch); 1046 if (hwrs_result & BT_HWRS) 1047 ASUS_HANDLE_INIT(bt_switch); 1048 1049 ASUS_HANDLE_INIT(wireless_status); 1050 1051 ASUS_HANDLE_INIT(brightness_set); 1052 ASUS_HANDLE_INIT(brightness_get); 1053 1054 ASUS_HANDLE_INIT(lcd_switch); 1055 1056 ASUS_HANDLE_INIT(display_set); 1057 ASUS_HANDLE_INIT(display_get); 1058 1059 /* There is a lot of models with "ALSL", but a few get 1060 a real light sens, so we need to check it. */ 1061 if (!ASUS_HANDLE_INIT(ls_switch)) 1062 ASUS_HANDLE_INIT(ls_level); 1063 1064 ASUS_HANDLE_INIT(gps_on); 1065 ASUS_HANDLE_INIT(gps_off); 1066 ASUS_HANDLE_INIT(gps_status); 1067 1068 kfree(model); 1069 1070 return AE_OK; 1071 } 1072 1073 static int asus_input_init(void) 1074 { 1075 const struct key_entry *key; 1076 int result; 1077 1078 hotk->inputdev = input_allocate_device(); 1079 if (!hotk->inputdev) { 1080 printk(ASUS_INFO "Unable to allocate input device\n"); 1081 return 0; 1082 } 1083 hotk->inputdev->name = "Asus Laptop extra buttons"; 1084 hotk->inputdev->phys = ASUS_HOTK_FILE "/input0"; 1085 hotk->inputdev->id.bustype = BUS_HOST; 1086 hotk->inputdev->getkeycode = asus_getkeycode; 1087 hotk->inputdev->setkeycode = asus_setkeycode; 1088 1089 for (key = asus_keymap; key->type != KE_END; key++) { 1090 switch (key->type) { 1091 case KE_KEY: 1092 set_bit(EV_KEY, hotk->inputdev->evbit); 1093 set_bit(key->keycode, hotk->inputdev->keybit); 1094 break; 1095 } 1096 } 1097 result = input_register_device(hotk->inputdev); 1098 if (result) { 1099 printk(ASUS_INFO "Unable to register input device\n"); 1100 input_free_device(hotk->inputdev); 1101 } 1102 return result; 1103 } 1104 1105 static int asus_hotk_check(void) 1106 { 1107 int result = 0; 1108 1109 result = acpi_bus_get_status(hotk->device); 1110 if (result) 1111 return result; 1112 1113 if (hotk->device->status.present) { 1114 result = asus_hotk_get_info(); 1115 } else { 1116 printk(ASUS_ERR "Hotkey device not present, aborting\n"); 1117 return -EINVAL; 1118 } 1119 1120 return result; 1121 } 1122 1123 static int asus_hotk_found; 1124 1125 static int asus_hotk_add(struct acpi_device *device) 1126 { 1127 acpi_status status = AE_OK; 1128 int result; 1129 1130 if (!device) 1131 return -EINVAL; 1132 1133 printk(ASUS_NOTICE "Asus Laptop Support version %s\n", 1134 ASUS_LAPTOP_VERSION); 1135 1136 hotk = kzalloc(sizeof(struct asus_hotk), GFP_KERNEL); 1137 if (!hotk) 1138 return -ENOMEM; 1139 1140 hotk->handle = device->handle; 1141 strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME); 1142 strcpy(acpi_device_class(device), ASUS_HOTK_CLASS); 1143 device->driver_data = hotk; 1144 hotk->device = device; 1145 1146 result = asus_hotk_check(); 1147 if (result) 1148 goto end; 1149 1150 asus_hotk_add_fs(); 1151 1152 /* 1153 * We install the handler, it will receive the hotk in parameter, so, we 1154 * could add other data to the hotk struct 1155 */ 1156 status = acpi_install_notify_handler(hotk->handle, ACPI_ALL_NOTIFY, 1157 asus_hotk_notify, hotk); 1158 if (ACPI_FAILURE(status)) 1159 printk(ASUS_ERR "Error installing notify handler\n"); 1160 1161 asus_hotk_found = 1; 1162 1163 /* WLED and BLED are on by default */ 1164 write_status(bt_switch_handle, 1, BT_ON); 1165 write_status(wl_switch_handle, 1, WL_ON); 1166 1167 /* If the h/w switch is off, we need to check the real status */ 1168 write_status(NULL, read_status(BT_ON), BT_ON); 1169 write_status(NULL, read_status(WL_ON), WL_ON); 1170 1171 /* LCD Backlight is on by default */ 1172 write_status(NULL, 1, LCD_ON); 1173 1174 /* LED display is off by default */ 1175 hotk->ledd_status = 0xFFF; 1176 1177 /* Set initial values of light sensor and level */ 1178 hotk->light_switch = 1; /* Default to light sensor disabled */ 1179 hotk->light_level = 0; /* level 5 for sensor sensitivity */ 1180 1181 if (ls_switch_handle) 1182 set_light_sens_switch(hotk->light_switch); 1183 1184 if (ls_level_handle) 1185 set_light_sens_level(hotk->light_level); 1186 1187 /* GPS is on by default */ 1188 write_status(NULL, 1, GPS_ON); 1189 1190 end: 1191 if (result) { 1192 kfree(hotk->name); 1193 kfree(hotk); 1194 } 1195 1196 return result; 1197 } 1198 1199 static int asus_hotk_remove(struct acpi_device *device, int type) 1200 { 1201 acpi_status status = 0; 1202 1203 if (!device || !acpi_driver_data(device)) 1204 return -EINVAL; 1205 1206 status = acpi_remove_notify_handler(hotk->handle, ACPI_ALL_NOTIFY, 1207 asus_hotk_notify); 1208 if (ACPI_FAILURE(status)) 1209 printk(ASUS_ERR "Error removing notify handler\n"); 1210 1211 kfree(hotk->name); 1212 kfree(hotk); 1213 1214 return 0; 1215 } 1216 1217 static void asus_backlight_exit(void) 1218 { 1219 if (asus_backlight_device) 1220 backlight_device_unregister(asus_backlight_device); 1221 } 1222 1223 #define ASUS_LED_UNREGISTER(object) \ 1224 if (object##_led.dev) \ 1225 led_classdev_unregister(&object##_led) 1226 1227 static void asus_led_exit(void) 1228 { 1229 destroy_workqueue(led_workqueue); 1230 ASUS_LED_UNREGISTER(mled); 1231 ASUS_LED_UNREGISTER(tled); 1232 ASUS_LED_UNREGISTER(pled); 1233 ASUS_LED_UNREGISTER(rled); 1234 ASUS_LED_UNREGISTER(gled); 1235 } 1236 1237 static void asus_input_exit(void) 1238 { 1239 if (hotk->inputdev) 1240 input_unregister_device(hotk->inputdev); 1241 } 1242 1243 static void __exit asus_laptop_exit(void) 1244 { 1245 asus_backlight_exit(); 1246 asus_led_exit(); 1247 asus_input_exit(); 1248 1249 acpi_bus_unregister_driver(&asus_hotk_driver); 1250 sysfs_remove_group(&asuspf_device->dev.kobj, &asuspf_attribute_group); 1251 platform_device_unregister(asuspf_device); 1252 platform_driver_unregister(&asuspf_driver); 1253 } 1254 1255 static int asus_backlight_init(struct device *dev) 1256 { 1257 struct backlight_device *bd; 1258 1259 if (brightness_set_handle && lcd_switch_handle) { 1260 bd = backlight_device_register(ASUS_HOTK_FILE, dev, 1261 NULL, &asusbl_ops); 1262 if (IS_ERR(bd)) { 1263 printk(ASUS_ERR 1264 "Could not register asus backlight device\n"); 1265 asus_backlight_device = NULL; 1266 return PTR_ERR(bd); 1267 } 1268 1269 asus_backlight_device = bd; 1270 1271 bd->props.max_brightness = 15; 1272 bd->props.brightness = read_brightness(NULL); 1273 bd->props.power = FB_BLANK_UNBLANK; 1274 backlight_update_status(bd); 1275 } 1276 return 0; 1277 } 1278 1279 static int asus_led_register(acpi_handle handle, 1280 struct led_classdev *ldev, struct device *dev) 1281 { 1282 if (!handle) 1283 return 0; 1284 1285 return led_classdev_register(dev, ldev); 1286 } 1287 1288 #define ASUS_LED_REGISTER(object, device) \ 1289 asus_led_register(object##_set_handle, &object##_led, device) 1290 1291 static int asus_led_init(struct device *dev) 1292 { 1293 int rv; 1294 1295 rv = ASUS_LED_REGISTER(mled, dev); 1296 if (rv) 1297 goto out; 1298 1299 rv = ASUS_LED_REGISTER(tled, dev); 1300 if (rv) 1301 goto out1; 1302 1303 rv = ASUS_LED_REGISTER(rled, dev); 1304 if (rv) 1305 goto out2; 1306 1307 rv = ASUS_LED_REGISTER(pled, dev); 1308 if (rv) 1309 goto out3; 1310 1311 rv = ASUS_LED_REGISTER(gled, dev); 1312 if (rv) 1313 goto out4; 1314 1315 led_workqueue = create_singlethread_workqueue("led_workqueue"); 1316 if (!led_workqueue) 1317 goto out5; 1318 1319 return 0; 1320 out5: 1321 rv = -ENOMEM; 1322 ASUS_LED_UNREGISTER(gled); 1323 out4: 1324 ASUS_LED_UNREGISTER(pled); 1325 out3: 1326 ASUS_LED_UNREGISTER(rled); 1327 out2: 1328 ASUS_LED_UNREGISTER(tled); 1329 out1: 1330 ASUS_LED_UNREGISTER(mled); 1331 out: 1332 return rv; 1333 } 1334 1335 static int __init asus_laptop_init(void) 1336 { 1337 struct device *dev; 1338 int result; 1339 1340 if (acpi_disabled) 1341 return -ENODEV; 1342 1343 result = acpi_bus_register_driver(&asus_hotk_driver); 1344 if (result < 0) 1345 return result; 1346 1347 /* 1348 * This is a bit of a kludge. We only want this module loaded 1349 * for ASUS systems, but there's currently no way to probe the 1350 * ACPI namespace for ASUS HIDs. So we just return failure if 1351 * we didn't find one, which will cause the module to be 1352 * unloaded. 1353 */ 1354 if (!asus_hotk_found) { 1355 acpi_bus_unregister_driver(&asus_hotk_driver); 1356 return -ENODEV; 1357 } 1358 1359 dev = acpi_get_physical_device(hotk->device->handle); 1360 1361 if (!acpi_video_backlight_support()) { 1362 result = asus_backlight_init(dev); 1363 if (result) 1364 goto fail_backlight; 1365 } else 1366 printk(ASUS_INFO "Brightness ignored, must be controlled by " 1367 "ACPI video driver\n"); 1368 1369 result = asus_input_init(); 1370 if (result) 1371 goto fail_input; 1372 1373 result = asus_led_init(dev); 1374 if (result) 1375 goto fail_led; 1376 1377 /* Register platform stuff */ 1378 result = platform_driver_register(&asuspf_driver); 1379 if (result) 1380 goto fail_platform_driver; 1381 1382 asuspf_device = platform_device_alloc(ASUS_HOTK_FILE, -1); 1383 if (!asuspf_device) { 1384 result = -ENOMEM; 1385 goto fail_platform_device1; 1386 } 1387 1388 result = platform_device_add(asuspf_device); 1389 if (result) 1390 goto fail_platform_device2; 1391 1392 result = sysfs_create_group(&asuspf_device->dev.kobj, 1393 &asuspf_attribute_group); 1394 if (result) 1395 goto fail_sysfs; 1396 1397 return 0; 1398 1399 fail_sysfs: 1400 platform_device_del(asuspf_device); 1401 1402 fail_platform_device2: 1403 platform_device_put(asuspf_device); 1404 1405 fail_platform_device1: 1406 platform_driver_unregister(&asuspf_driver); 1407 1408 fail_platform_driver: 1409 asus_led_exit(); 1410 1411 fail_led: 1412 asus_input_exit(); 1413 1414 fail_input: 1415 asus_backlight_exit(); 1416 1417 fail_backlight: 1418 1419 return result; 1420 } 1421 1422 module_init(asus_laptop_init); 1423 module_exit(asus_laptop_exit); 1424