asus-laptop.c revision aee0afb8cb52178164accfec9cfc58bc27b597b3
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#include <linux/input/sparse-keymap.h> 53#include <linux/rfkill.h> 54 55#define ASUS_LAPTOP_VERSION "0.42" 56 57#define ASUS_LAPTOP_NAME "Asus Laptop Support" 58#define ASUS_LAPTOP_CLASS "hotkey" 59#define ASUS_LAPTOP_DEVICE_NAME "Hotkey" 60#define ASUS_LAPTOP_FILE KBUILD_MODNAME 61#define ASUS_LAPTOP_PREFIX "\\_SB.ATKD." 62 63MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary"); 64MODULE_DESCRIPTION(ASUS_LAPTOP_NAME); 65MODULE_LICENSE("GPL"); 66 67/* 68 * WAPF defines the behavior of the Fn+Fx wlan key 69 * The significance of values is yet to be found, but 70 * most of the time: 71 * 0x0 will do nothing 72 * 0x1 will allow to control the device with Fn+Fx key. 73 * 0x4 will send an ACPI event (0x88) while pressing the Fn+Fx key 74 * 0x5 like 0x1 or 0x4 75 * So, if something doesn't work as you want, just try other values =) 76 */ 77static uint wapf = 1; 78module_param(wapf, uint, 0644); 79MODULE_PARM_DESC(wapf, "WAPF value"); 80 81static uint wlan_status = 1; 82static uint bluetooth_status = 1; 83 84module_param(wlan_status, uint, 0644); 85MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot " 86 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 87 "default is 1"); 88 89module_param(bluetooth_status, uint, 0644); 90MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot " 91 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 92 "default is 1"); 93 94/* 95 * Some events we use, same for all Asus 96 */ 97#define ATKD_BR_UP 0x10 // (event & ~ATKD_BR_UP) = brightness level 98#define ATKD_BR_DOWN 0x20 // (event & ~ATKD_BR_DOWN) = britghness level 99#define ATKD_BR_MIN ATKD_BR_UP 100#define ATKD_BR_MAX (ATKD_BR_DOWN | 0xF) // 0x2f 101#define ATKD_LCD_ON 0x33 102#define ATKD_LCD_OFF 0x34 103 104/* 105 * Known bits returned by \_SB.ATKD.HWRS 106 */ 107#define WL_HWRS 0x80 108#define BT_HWRS 0x100 109 110/* 111 * Flags for hotk status 112 * WL_ON and BT_ON are also used for wireless_status() 113 */ 114#define WL_RSTS 0x01 /* internal Wifi */ 115#define BT_RSTS 0x02 /* internal Bluetooth */ 116 117#define ASUS_HANDLE(object, paths...) \ 118 static acpi_handle object##_handle = NULL; \ 119 static char *object##_paths[] = { paths } 120 121/* LED */ 122#define METHOD_MLED "MLED" 123#define METHOD_TLED "TLED" 124#define METHOD_RLED "RLED" /* W1JC */ 125#define METHOD_PLED "PLED" /* A7J */ 126#define METHOD_GLED "GLED" /* G1, G2 (probably) */ 127 128/* LEDD */ 129#define METHOD_LEDD "SLCM" 130 131/* 132 * Bluetooth and WLAN 133 * WLED and BLED are not handled like other XLED, because in some dsdt 134 * they also control the WLAN/Bluetooth device. 135 */ 136#define METHOD_WLAN "WLED" 137#define METHOD_BLUETOOTH "BLED" 138#define METHOD_WL_STATUS "RSTS" 139 140/* Brightness */ 141#define METHOD_BRIGHTNESS_SET "SPLV" 142#define METHOD_BRIGHTNESS_GET "GPLV" 143 144/* Backlight */ 145ASUS_HANDLE(lcd_switch, "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */ 146 "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */ 147 "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */ 148 "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */ 149 "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */ 150 "\\_SB.PCI0.LPCB.EC0._Q0E", /* P30/P35 */ 151 "\\_SB.PCI0.PX40.Q10", /* S1x */ 152 "\\Q10"); /* A2x, L2D, L3D, M2E */ 153 154/* Display */ 155#define METHOD_SWITCH_DISPLAY "SDSP" 156ASUS_HANDLE(display_get, 157 /* A6B, A6K A6R A7D F3JM L4R M6R A3G M6A M6V VX-1 V6J V6V W3Z */ 158 "\\_SB.PCI0.P0P1.VGA.GETD", 159 /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V S5A M5A z33A W1Jc W2V G1 */ 160 "\\_SB.PCI0.P0P2.VGA.GETD", 161 /* A6V A6Q */ 162 "\\_SB.PCI0.P0P3.VGA.GETD", 163 /* A6T, A6M */ 164 "\\_SB.PCI0.P0PA.VGA.GETD", 165 /* L3C */ 166 "\\_SB.PCI0.PCI1.VGAC.NMAP", 167 /* Z96F */ 168 "\\_SB.PCI0.VGA.GETD", 169 /* A2D */ 170 "\\ACTD", 171 /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */ 172 "\\ADVG", 173 /* P30 */ 174 "\\DNXT", 175 /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */ 176 "\\INFB", 177 /* A3F A6F A3N A3L M6N W3N W6A */ 178 "\\SSTE"); 179 180#define METHOD_ALS_CONTROL "ALSC" /* Z71A Z71V */ 181#define METHOD_ALS_LEVEL "ALSL" /* Z71A Z71V */ 182 183/* GPS */ 184/* R2H use different handle for GPS on/off */ 185#define METHOD_GPS_ON "SDON" 186#define METHOD_GPS_OFF "SDOF" 187#define METHOD_GPS_STATUS "GPST" 188 189/* Keyboard light */ 190#define METHOD_KBD_LIGHT_SET "SLKB" 191#define METHOD_KBD_LIGHT_GET "GLKB" 192 193/* 194 * Define a specific led structure to keep the main structure clean 195 */ 196struct asus_led { 197 int wk; 198 struct work_struct work; 199 struct led_classdev led; 200 struct asus_laptop *asus; 201 const char *method; 202}; 203 204/* 205 * This is the main structure, we can use it to store anything interesting 206 * about the hotk device 207 */ 208struct asus_laptop { 209 char *name; /* laptop name */ 210 211 struct acpi_table_header *dsdt_info; 212 struct platform_device *platform_device; 213 struct acpi_device *device; /* the device we are in */ 214 struct backlight_device *backlight_device; 215 216 struct input_dev *inputdev; 217 struct key_entry *keymap; 218 219 struct asus_led mled; 220 struct asus_led tled; 221 struct asus_led rled; 222 struct asus_led pled; 223 struct asus_led gled; 224 struct asus_led kled; 225 struct workqueue_struct *led_workqueue; 226 227 int wireless_status; 228 bool have_rsts; 229 int lcd_state; 230 231 struct rfkill *gps_rfkill; 232 233 acpi_handle handle; /* the handle of the hotk device */ 234 u32 ledd_status; /* status of the LED display */ 235 u8 light_level; /* light sensor level */ 236 u8 light_switch; /* light sensor switch value */ 237 u16 event_count[128]; /* count for each event TODO make this better */ 238 u16 *keycode_map; 239}; 240 241static const struct key_entry asus_keymap[] = { 242 /* Lenovo SL Specific keycodes */ 243 {KE_KEY, 0x02, { KEY_SCREENLOCK } }, 244 {KE_KEY, 0x05, { KEY_WLAN } }, 245 {KE_KEY, 0x08, { KEY_F13 } }, 246 {KE_KEY, 0x17, { KEY_ZOOM } }, 247 {KE_KEY, 0x1f, { KEY_BATTERY } }, 248 /* End of Lenovo SL Specific keycodes */ 249 {KE_KEY, 0x30, { KEY_VOLUMEUP } }, 250 {KE_KEY, 0x31, { KEY_VOLUMEDOWN } }, 251 {KE_KEY, 0x32, { KEY_MUTE } }, 252 {KE_KEY, 0x33, { KEY_SWITCHVIDEOMODE } }, 253 {KE_KEY, 0x34, { KEY_SWITCHVIDEOMODE } }, 254 {KE_KEY, 0x40, { KEY_PREVIOUSSONG } }, 255 {KE_KEY, 0x41, { KEY_NEXTSONG } }, 256 {KE_KEY, 0x43, { KEY_STOPCD } }, 257 {KE_KEY, 0x45, { KEY_PLAYPAUSE } }, 258 {KE_KEY, 0x4c, { KEY_MEDIA } }, 259 {KE_KEY, 0x50, { KEY_EMAIL } }, 260 {KE_KEY, 0x51, { KEY_WWW } }, 261 {KE_KEY, 0x55, { KEY_CALC } }, 262 {KE_KEY, 0x5C, { KEY_SCREENLOCK } }, /* Screenlock */ 263 {KE_KEY, 0x5D, { KEY_WLAN } }, 264 {KE_KEY, 0x5E, { KEY_WLAN } }, 265 {KE_KEY, 0x5F, { KEY_WLAN } }, 266 {KE_KEY, 0x60, { KEY_SWITCHVIDEOMODE } }, 267 {KE_KEY, 0x61, { KEY_SWITCHVIDEOMODE } }, 268 {KE_KEY, 0x62, { KEY_SWITCHVIDEOMODE } }, 269 {KE_KEY, 0x63, { KEY_SWITCHVIDEOMODE } }, 270 {KE_KEY, 0x6B, { KEY_F13 } }, /* Lock Touchpad */ 271 {KE_KEY, 0x7E, { KEY_BLUETOOTH } }, 272 {KE_KEY, 0x7D, { KEY_BLUETOOTH } }, 273 {KE_KEY, 0x82, { KEY_CAMERA } }, 274 {KE_KEY, 0x88, { KEY_WLAN } }, 275 {KE_KEY, 0x8A, { KEY_PROG1 } }, 276 {KE_KEY, 0x95, { KEY_MEDIA } }, 277 {KE_KEY, 0x99, { KEY_PHONE } }, 278 {KE_KEY, 0xc4, { KEY_KBDILLUMUP } }, 279 {KE_KEY, 0xc5, { KEY_KBDILLUMDOWN } }, 280 {KE_END, 0}, 281}; 282 283 284/* 285 * This function evaluates an ACPI method, given an int as parameter, the 286 * method is searched within the scope of the handle, can be NULL. The output 287 * of the method is written is output, which can also be NULL 288 * 289 * returns 0 if write is successful, -1 else. 290 */ 291static int write_acpi_int_ret(acpi_handle handle, const char *method, int val, 292 struct acpi_buffer *output) 293{ 294 struct acpi_object_list params; /* list of input parameters (an int) */ 295 union acpi_object in_obj; /* the only param we use */ 296 acpi_status status; 297 298 if (!handle) 299 return 0; 300 301 params.count = 1; 302 params.pointer = &in_obj; 303 in_obj.type = ACPI_TYPE_INTEGER; 304 in_obj.integer.value = val; 305 306 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); 307 if (status == AE_OK) 308 return 0; 309 else 310 return -1; 311} 312 313static int write_acpi_int(acpi_handle handle, const char *method, int val) 314{ 315 return write_acpi_int_ret(handle, method, val, NULL); 316} 317 318static int acpi_check_handle(acpi_handle handle, const char *method, 319 acpi_handle *ret) 320{ 321 acpi_status status; 322 323 if (method == NULL) 324 return -ENODEV; 325 326 if (ret) 327 status = acpi_get_handle(handle, (char *)method, 328 ret); 329 else { 330 acpi_handle dummy; 331 332 status = acpi_get_handle(handle, (char *)method, 333 &dummy); 334 } 335 336 if (status != AE_OK) { 337 if (ret) 338 pr_warning("Error finding %s\n", method); 339 return -ENODEV; 340 } 341 return 0; 342} 343 344/* Generic LED function */ 345static int asus_led_set(struct asus_laptop *asus, const char *method, 346 int value) 347{ 348 if (!strcmp(method, METHOD_MLED)) 349 value = !value; 350 else if (!strcmp(method, METHOD_GLED)) 351 value = !value + 1; 352 else 353 value = !!value; 354 355 return write_acpi_int(asus->handle, method, value); 356} 357 358/* 359 * LEDs 360 */ 361/* /sys/class/led handlers */ 362static void asus_led_cdev_set(struct led_classdev *led_cdev, 363 enum led_brightness value) 364{ 365 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 366 struct asus_laptop *asus = led->asus; 367 368 led->wk = !!value; 369 queue_work(asus->led_workqueue, &led->work); 370} 371 372static void asus_led_cdev_update(struct work_struct *work) 373{ 374 struct asus_led *led = container_of(work, struct asus_led, work); 375 struct asus_laptop *asus = led->asus; 376 377 asus_led_set(asus, led->method, led->wk); 378} 379 380static enum led_brightness asus_led_cdev_get(struct led_classdev *led_cdev) 381{ 382 return led_cdev->brightness; 383} 384 385/* 386 * Keyboard backlight (also a LED) 387 */ 388static int asus_kled_lvl(struct asus_laptop *asus) 389{ 390 unsigned long long kblv; 391 struct acpi_object_list params; 392 union acpi_object in_obj; 393 acpi_status rv; 394 395 params.count = 1; 396 params.pointer = &in_obj; 397 in_obj.type = ACPI_TYPE_INTEGER; 398 in_obj.integer.value = 2; 399 400 rv = acpi_evaluate_integer(asus->handle, METHOD_KBD_LIGHT_GET, 401 ¶ms, &kblv); 402 if (ACPI_FAILURE(rv)) { 403 pr_warning("Error reading kled level\n"); 404 return -ENODEV; 405 } 406 return kblv; 407} 408 409static int asus_kled_set(struct asus_laptop *asus, int kblv) 410{ 411 if (kblv > 0) 412 kblv = (1 << 7) | (kblv & 0x7F); 413 else 414 kblv = 0; 415 416 if (write_acpi_int(asus->handle, METHOD_KBD_LIGHT_SET, kblv)) { 417 pr_warning("Keyboard LED display write failed\n"); 418 return -EINVAL; 419 } 420 return 0; 421} 422 423static void asus_kled_cdev_set(struct led_classdev *led_cdev, 424 enum led_brightness value) 425{ 426 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 427 struct asus_laptop *asus = led->asus; 428 429 led->wk = value; 430 queue_work(asus->led_workqueue, &led->work); 431} 432 433static void asus_kled_cdev_update(struct work_struct *work) 434{ 435 struct asus_led *led = container_of(work, struct asus_led, work); 436 struct asus_laptop *asus = led->asus; 437 438 asus_kled_set(asus, led->wk); 439} 440 441static enum led_brightness asus_kled_cdev_get(struct led_classdev *led_cdev) 442{ 443 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 444 struct asus_laptop *asus = led->asus; 445 446 return asus_kled_lvl(asus); 447} 448 449static void asus_led_exit(struct asus_laptop *asus) 450{ 451 if (asus->mled.led.dev) 452 led_classdev_unregister(&asus->mled.led); 453 if (asus->tled.led.dev) 454 led_classdev_unregister(&asus->tled.led); 455 if (asus->pled.led.dev) 456 led_classdev_unregister(&asus->pled.led); 457 if (asus->rled.led.dev) 458 led_classdev_unregister(&asus->rled.led); 459 if (asus->gled.led.dev) 460 led_classdev_unregister(&asus->gled.led); 461 if (asus->kled.led.dev) 462 led_classdev_unregister(&asus->kled.led); 463 if (asus->led_workqueue) { 464 destroy_workqueue(asus->led_workqueue); 465 asus->led_workqueue = NULL; 466 } 467} 468 469/* Ugly macro, need to fix that later */ 470static int asus_led_register(struct asus_laptop *asus, 471 struct asus_led *led, 472 const char *name, const char *method) 473{ 474 struct led_classdev *led_cdev = &led->led; 475 476 if (!method || acpi_check_handle(asus->handle, method, NULL)) 477 return 0; /* Led not present */ 478 479 led->asus = asus; 480 led->method = method; 481 482 INIT_WORK(&led->work, asus_led_cdev_update); 483 led_cdev->name = name; 484 led_cdev->brightness_set = asus_led_cdev_set; 485 led_cdev->brightness_get = asus_led_cdev_get; 486 led_cdev->max_brightness = 1; 487 return led_classdev_register(&asus->platform_device->dev, led_cdev); 488} 489 490static int asus_led_init(struct asus_laptop *asus) 491{ 492 int r; 493 494 /* 495 * Functions that actually update the LED's are called from a 496 * workqueue. By doing this as separate work rather than when the LED 497 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 498 * potentially bad time, such as a timer interrupt. 499 */ 500 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 501 if (!asus->led_workqueue) 502 return -ENOMEM; 503 504 r = asus_led_register(asus, &asus->mled, "asus::mail", METHOD_MLED); 505 if (r) 506 goto error; 507 r = asus_led_register(asus, &asus->tled, "asus::touchpad", METHOD_TLED); 508 if (r) 509 goto error; 510 r = asus_led_register(asus, &asus->rled, "asus::record", METHOD_RLED); 511 if (r) 512 goto error; 513 r = asus_led_register(asus, &asus->pled, "asus::phone", METHOD_PLED); 514 if (r) 515 goto error; 516 r = asus_led_register(asus, &asus->gled, "asus::gaming", METHOD_GLED); 517 if (r) 518 goto error; 519 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL) && 520 !acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_GET, NULL)) { 521 struct asus_led *led = &asus->kled; 522 struct led_classdev *cdev = &led->led; 523 524 led->asus = asus; 525 526 INIT_WORK(&led->work, asus_kled_cdev_update); 527 cdev->name = "asus::kbd_backlight"; 528 cdev->brightness_set = asus_kled_cdev_set; 529 cdev->brightness_get = asus_kled_cdev_get; 530 cdev->max_brightness = 3; 531 r = led_classdev_register(&asus->platform_device->dev, cdev); 532 } 533error: 534 if (r) 535 asus_led_exit(asus); 536 return r; 537} 538 539/* 540 * Backlight device 541 */ 542static int asus_lcd_status(struct asus_laptop *asus) 543{ 544 return asus->lcd_state; 545} 546 547static int asus_lcd_set(struct asus_laptop *asus, int value) 548{ 549 int lcd = 0; 550 acpi_status status = 0; 551 552 lcd = !!value; 553 554 if (lcd == asus_lcd_status(asus)) 555 return 0; 556 557 if (!lcd_switch_handle) 558 return -ENODEV; 559 560 status = acpi_evaluate_object(lcd_switch_handle, 561 NULL, NULL, NULL); 562 563 if (ACPI_FAILURE(status)) { 564 pr_warning("Error switching LCD\n"); 565 return -ENODEV; 566 } 567 568 asus->lcd_state = lcd; 569 return 0; 570} 571 572static void lcd_blank(struct asus_laptop *asus, int blank) 573{ 574 struct backlight_device *bd = asus->backlight_device; 575 576 asus->lcd_state = (blank == FB_BLANK_UNBLANK); 577 578 if (bd) { 579 bd->props.power = blank; 580 backlight_update_status(bd); 581 } 582} 583 584static int asus_read_brightness(struct backlight_device *bd) 585{ 586 struct asus_laptop *asus = bl_get_data(bd); 587 unsigned long long value; 588 acpi_status rv = AE_OK; 589 590 rv = acpi_evaluate_integer(asus->handle, METHOD_BRIGHTNESS_GET, 591 NULL, &value); 592 if (ACPI_FAILURE(rv)) 593 pr_warning("Error reading brightness\n"); 594 595 return value; 596} 597 598static int asus_set_brightness(struct backlight_device *bd, int value) 599{ 600 struct asus_laptop *asus = bl_get_data(bd); 601 602 if (write_acpi_int(asus->handle, METHOD_BRIGHTNESS_SET, value)) { 603 pr_warning("Error changing brightness\n"); 604 return -EIO; 605 } 606 return 0; 607} 608 609static int update_bl_status(struct backlight_device *bd) 610{ 611 struct asus_laptop *asus = bl_get_data(bd); 612 int rv; 613 int value = bd->props.brightness; 614 615 rv = asus_set_brightness(bd, value); 616 if (rv) 617 return rv; 618 619 value = (bd->props.power == FB_BLANK_UNBLANK) ? 1 : 0; 620 return asus_lcd_set(asus, value); 621} 622 623static struct backlight_ops asusbl_ops = { 624 .get_brightness = asus_read_brightness, 625 .update_status = update_bl_status, 626}; 627 628static int asus_backlight_notify(struct asus_laptop *asus) 629{ 630 struct backlight_device *bd = asus->backlight_device; 631 int old = bd->props.brightness; 632 633 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 634 635 return old; 636} 637 638static int asus_backlight_init(struct asus_laptop *asus) 639{ 640 struct backlight_device *bd; 641 struct device *dev = &asus->platform_device->dev; 642 643 if (!acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) && 644 !acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL) && 645 lcd_switch_handle) { 646 bd = backlight_device_register(ASUS_LAPTOP_FILE, dev, 647 asus, &asusbl_ops); 648 if (IS_ERR(bd)) { 649 pr_err("Could not register asus backlight device\n"); 650 asus->backlight_device = NULL; 651 return PTR_ERR(bd); 652 } 653 654 asus->backlight_device = bd; 655 656 bd->props.max_brightness = 15; 657 bd->props.power = FB_BLANK_UNBLANK; 658 bd->props.brightness = asus_read_brightness(bd); 659 backlight_update_status(bd); 660 } 661 return 0; 662} 663 664static void asus_backlight_exit(struct asus_laptop *asus) 665{ 666 if (asus->backlight_device) 667 backlight_device_unregister(asus->backlight_device); 668 asus->backlight_device = NULL; 669} 670 671/* 672 * Platform device handlers 673 */ 674 675/* 676 * We write our info in page, we begin at offset off and cannot write more 677 * than count bytes. We set eof to 1 if we handle those 2 values. We return the 678 * number of bytes written in page 679 */ 680static ssize_t show_infos(struct device *dev, 681 struct device_attribute *attr, char *page) 682{ 683 struct asus_laptop *asus = dev_get_drvdata(dev); 684 int len = 0; 685 unsigned long long temp; 686 char buf[16]; /* enough for all info */ 687 acpi_status rv = AE_OK; 688 689 /* 690 * We use the easy way, we don't care of off and count, so we don't set eof 691 * to 1 692 */ 693 694 len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n"); 695 len += sprintf(page + len, "Model reference : %s\n", asus->name); 696 /* 697 * The SFUN method probably allows the original driver to get the list 698 * of features supported by a given model. For now, 0x0100 or 0x0800 699 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 700 * The significance of others is yet to be found. 701 */ 702 rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp); 703 if (!ACPI_FAILURE(rv)) 704 len += sprintf(page + len, "SFUN value : %#x\n", 705 (uint) temp); 706 /* 707 * The HWRS method return informations about the hardware. 708 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 709 * The significance of others is yet to be found. 710 * If we don't find the method, we assume the device are present. 711 */ 712 rv = acpi_evaluate_integer(asus->handle, "HRWS", NULL, &temp); 713 if (!ACPI_FAILURE(rv)) 714 len += sprintf(page + len, "HRWS value : %#x\n", 715 (uint) temp); 716 /* 717 * Another value for userspace: the ASYM method returns 0x02 for 718 * battery low and 0x04 for battery critical, its readings tend to be 719 * more accurate than those provided by _BST. 720 * Note: since not all the laptops provide this method, errors are 721 * silently ignored. 722 */ 723 rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp); 724 if (!ACPI_FAILURE(rv)) 725 len += sprintf(page + len, "ASYM value : %#x\n", 726 (uint) temp); 727 if (asus->dsdt_info) { 728 snprintf(buf, 16, "%d", asus->dsdt_info->length); 729 len += sprintf(page + len, "DSDT length : %s\n", buf); 730 snprintf(buf, 16, "%d", asus->dsdt_info->checksum); 731 len += sprintf(page + len, "DSDT checksum : %s\n", buf); 732 snprintf(buf, 16, "%d", asus->dsdt_info->revision); 733 len += sprintf(page + len, "DSDT revision : %s\n", buf); 734 snprintf(buf, 7, "%s", asus->dsdt_info->oem_id); 735 len += sprintf(page + len, "OEM id : %s\n", buf); 736 snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id); 737 len += sprintf(page + len, "OEM table id : %s\n", buf); 738 snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision); 739 len += sprintf(page + len, "OEM revision : 0x%s\n", buf); 740 snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id); 741 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); 742 snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision); 743 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); 744 } 745 746 return len; 747} 748 749static int parse_arg(const char *buf, unsigned long count, int *val) 750{ 751 if (!count) 752 return 0; 753 if (count > 31) 754 return -EINVAL; 755 if (sscanf(buf, "%i", val) != 1) 756 return -EINVAL; 757 return count; 758} 759 760static ssize_t sysfs_acpi_set(struct asus_laptop *asus, 761 const char *buf, size_t count, 762 const char *method) 763{ 764 int rv, value; 765 int out = 0; 766 767 rv = parse_arg(buf, count, &value); 768 if (rv > 0) 769 out = value ? 1 : 0; 770 771 if (write_acpi_int(asus->handle, method, value)) 772 return -ENODEV; 773 return rv; 774} 775 776/* 777 * LEDD display 778 */ 779static ssize_t show_ledd(struct device *dev, 780 struct device_attribute *attr, char *buf) 781{ 782 struct asus_laptop *asus = dev_get_drvdata(dev); 783 784 return sprintf(buf, "0x%08x\n", asus->ledd_status); 785} 786 787static ssize_t store_ledd(struct device *dev, struct device_attribute *attr, 788 const char *buf, size_t count) 789{ 790 struct asus_laptop *asus = dev_get_drvdata(dev); 791 int rv, value; 792 793 rv = parse_arg(buf, count, &value); 794 if (rv > 0) { 795 if (write_acpi_int(asus->handle, METHOD_LEDD, value)) 796 pr_warning("LED display write failed\n"); 797 else 798 asus->ledd_status = (u32) value; 799 } 800 return rv; 801} 802 803/* 804 * Wireless 805 */ 806static int asus_wireless_status(struct asus_laptop *asus, int mask) 807{ 808 unsigned long long status; 809 acpi_status rv = AE_OK; 810 811 if (!asus->have_rsts) 812 return (asus->wireless_status & mask) ? 1 : 0; 813 814 rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS, 815 NULL, &status); 816 if (ACPI_FAILURE(rv)) { 817 pr_warning("Error reading Wireless status\n"); 818 return -EINVAL; 819 } 820 return !!(status & mask); 821} 822 823/* 824 * WLAN 825 */ 826static int asus_wlan_set(struct asus_laptop *asus, int status) 827{ 828 if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) { 829 pr_warning("Error setting wlan status to %d", status); 830 return -EIO; 831 } 832 return 0; 833} 834 835static ssize_t show_wlan(struct device *dev, 836 struct device_attribute *attr, char *buf) 837{ 838 struct asus_laptop *asus = dev_get_drvdata(dev); 839 840 return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS)); 841} 842 843static ssize_t store_wlan(struct device *dev, struct device_attribute *attr, 844 const char *buf, size_t count) 845{ 846 struct asus_laptop *asus = dev_get_drvdata(dev); 847 848 return sysfs_acpi_set(asus, buf, count, METHOD_WLAN); 849} 850 851/* 852 * Bluetooth 853 */ 854static int asus_bluetooth_set(struct asus_laptop *asus, int status) 855{ 856 if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) { 857 pr_warning("Error setting bluetooth status to %d", status); 858 return -EIO; 859 } 860 return 0; 861} 862 863static ssize_t show_bluetooth(struct device *dev, 864 struct device_attribute *attr, char *buf) 865{ 866 struct asus_laptop *asus = dev_get_drvdata(dev); 867 868 return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS)); 869} 870 871static ssize_t store_bluetooth(struct device *dev, 872 struct device_attribute *attr, const char *buf, 873 size_t count) 874{ 875 struct asus_laptop *asus = dev_get_drvdata(dev); 876 877 return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH); 878} 879 880/* 881 * Display 882 */ 883static void asus_set_display(struct asus_laptop *asus, int value) 884{ 885 /* no sanity check needed for now */ 886 if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value)) 887 pr_warning("Error setting display\n"); 888 return; 889} 890 891static int read_display(struct asus_laptop *asus) 892{ 893 unsigned long long value = 0; 894 acpi_status rv = AE_OK; 895 896 /* 897 * In most of the case, we know how to set the display, but sometime 898 * we can't read it 899 */ 900 if (display_get_handle) { 901 rv = acpi_evaluate_integer(display_get_handle, NULL, 902 NULL, &value); 903 if (ACPI_FAILURE(rv)) 904 pr_warning("Error reading display status\n"); 905 } 906 907 value &= 0x0F; /* needed for some models, shouldn't hurt others */ 908 909 return value; 910} 911 912/* 913 * Now, *this* one could be more user-friendly, but so far, no-one has 914 * complained. The significance of bits is the same as in store_disp() 915 */ 916static ssize_t show_disp(struct device *dev, 917 struct device_attribute *attr, char *buf) 918{ 919 struct asus_laptop *asus = dev_get_drvdata(dev); 920 921 return sprintf(buf, "%d\n", read_display(asus)); 922} 923 924/* 925 * Experimental support for display switching. As of now: 1 should activate 926 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI. 927 * Any combination (bitwise) of these will suffice. I never actually tested 4 928 * displays hooked up simultaneously, so be warned. See the acpi4asus README 929 * for more info. 930 */ 931static ssize_t store_disp(struct device *dev, struct device_attribute *attr, 932 const char *buf, size_t count) 933{ 934 struct asus_laptop *asus = dev_get_drvdata(dev); 935 int rv, value; 936 937 rv = parse_arg(buf, count, &value); 938 if (rv > 0) 939 asus_set_display(asus, value); 940 return rv; 941} 942 943/* 944 * Light Sens 945 */ 946static void asus_als_switch(struct asus_laptop *asus, int value) 947{ 948 if (write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value)) 949 pr_warning("Error setting light sensor switch\n"); 950 asus->light_switch = value; 951} 952 953static ssize_t show_lssw(struct device *dev, 954 struct device_attribute *attr, char *buf) 955{ 956 struct asus_laptop *asus = dev_get_drvdata(dev); 957 958 return sprintf(buf, "%d\n", asus->light_switch); 959} 960 961static ssize_t store_lssw(struct device *dev, struct device_attribute *attr, 962 const char *buf, size_t count) 963{ 964 struct asus_laptop *asus = dev_get_drvdata(dev); 965 int rv, value; 966 967 rv = parse_arg(buf, count, &value); 968 if (rv > 0) 969 asus_als_switch(asus, value ? 1 : 0); 970 971 return rv; 972} 973 974static void asus_als_level(struct asus_laptop *asus, int value) 975{ 976 if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value)) 977 pr_warning("Error setting light sensor level\n"); 978 asus->light_level = value; 979} 980 981static ssize_t show_lslvl(struct device *dev, 982 struct device_attribute *attr, char *buf) 983{ 984 struct asus_laptop *asus = dev_get_drvdata(dev); 985 986 return sprintf(buf, "%d\n", asus->light_level); 987} 988 989static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr, 990 const char *buf, size_t count) 991{ 992 struct asus_laptop *asus = dev_get_drvdata(dev); 993 int rv, value; 994 995 rv = parse_arg(buf, count, &value); 996 if (rv > 0) { 997 value = (0 < value) ? ((15 < value) ? 15 : value) : 0; 998 /* 0 <= value <= 15 */ 999 asus_als_level(asus, value); 1000 } 1001 1002 return rv; 1003} 1004 1005/* 1006 * GPS 1007 */ 1008static int asus_gps_status(struct asus_laptop *asus) 1009{ 1010 unsigned long long status; 1011 acpi_status rv = AE_OK; 1012 1013 rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS, 1014 NULL, &status); 1015 if (ACPI_FAILURE(rv)) { 1016 pr_warning("Error reading GPS status\n"); 1017 return -ENODEV; 1018 } 1019 return !!status; 1020} 1021 1022static int asus_gps_switch(struct asus_laptop *asus, int status) 1023{ 1024 const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF; 1025 1026 if (write_acpi_int(asus->handle, meth, 0x02)) 1027 return -ENODEV; 1028 return 0; 1029} 1030 1031static ssize_t show_gps(struct device *dev, 1032 struct device_attribute *attr, char *buf) 1033{ 1034 struct asus_laptop *asus = dev_get_drvdata(dev); 1035 1036 return sprintf(buf, "%d\n", asus_gps_status(asus)); 1037} 1038 1039static ssize_t store_gps(struct device *dev, struct device_attribute *attr, 1040 const char *buf, size_t count) 1041{ 1042 struct asus_laptop *asus = dev_get_drvdata(dev); 1043 int rv, value; 1044 int ret; 1045 1046 rv = parse_arg(buf, count, &value); 1047 if (rv <= 0) 1048 return -EINVAL; 1049 ret = asus_gps_switch(asus, !!value); 1050 if (ret) 1051 return ret; 1052 rfkill_set_sw_state(asus->gps_rfkill, !value); 1053 return rv; 1054} 1055 1056/* 1057 * rfkill 1058 */ 1059static int asus_gps_rfkill_set(void *data, bool blocked) 1060{ 1061 acpi_handle handle = data; 1062 1063 return asus_gps_switch(handle, !blocked); 1064} 1065 1066static const struct rfkill_ops asus_gps_rfkill_ops = { 1067 .set_block = asus_gps_rfkill_set, 1068}; 1069 1070static void asus_rfkill_exit(struct asus_laptop *asus) 1071{ 1072 if (asus->gps_rfkill) { 1073 rfkill_unregister(asus->gps_rfkill); 1074 rfkill_destroy(asus->gps_rfkill); 1075 asus->gps_rfkill = NULL; 1076 } 1077} 1078 1079static int asus_rfkill_init(struct asus_laptop *asus) 1080{ 1081 int result; 1082 1083 if (acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) || 1084 acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) || 1085 acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL)) 1086 return 0; 1087 1088 asus->gps_rfkill = rfkill_alloc("asus-gps", &asus->platform_device->dev, 1089 RFKILL_TYPE_GPS, 1090 &asus_gps_rfkill_ops, NULL); 1091 if (!asus->gps_rfkill) 1092 return -EINVAL; 1093 1094 result = rfkill_register(asus->gps_rfkill); 1095 if (result) { 1096 rfkill_destroy(asus->gps_rfkill); 1097 asus->gps_rfkill = NULL; 1098 } 1099 1100 return result; 1101} 1102 1103/* 1104 * Input device (i.e. hotkeys) 1105 */ 1106static void asus_input_notify(struct asus_laptop *asus, int event) 1107{ 1108 if (asus->inputdev) 1109 sparse_keymap_report_event(asus->inputdev, event, 1, true); 1110} 1111 1112static int asus_input_init(struct asus_laptop *asus) 1113{ 1114 struct input_dev *input; 1115 int error; 1116 1117 input = input_allocate_device(); 1118 if (!input) { 1119 pr_info("Unable to allocate input device\n"); 1120 return 0; 1121 } 1122 input->name = "Asus Laptop extra buttons"; 1123 input->phys = ASUS_LAPTOP_FILE "/input0"; 1124 input->id.bustype = BUS_HOST; 1125 input->dev.parent = &asus->platform_device->dev; 1126 input_set_drvdata(input, asus); 1127 1128 error = sparse_keymap_setup(input, asus_keymap, NULL); 1129 if (error) { 1130 pr_err("Unable to setup input device keymap\n"); 1131 goto err_keymap; 1132 } 1133 error = input_register_device(input); 1134 if (error) { 1135 pr_info("Unable to register input device\n"); 1136 goto err_device; 1137 } 1138 1139 asus->inputdev = input; 1140 return 0; 1141 1142err_keymap: 1143 sparse_keymap_free(input); 1144err_device: 1145 input_free_device(input); 1146 return error; 1147} 1148 1149static void asus_input_exit(struct asus_laptop *asus) 1150{ 1151 if (asus->inputdev) { 1152 sparse_keymap_free(asus->inputdev); 1153 input_unregister_device(asus->inputdev); 1154 } 1155} 1156 1157/* 1158 * ACPI driver 1159 */ 1160static void asus_acpi_notify(struct acpi_device *device, u32 event) 1161{ 1162 struct asus_laptop *asus = acpi_driver_data(device); 1163 u16 count; 1164 1165 /* 1166 * We need to tell the backlight device when the backlight power is 1167 * switched 1168 */ 1169 if (event == ATKD_LCD_ON) 1170 lcd_blank(asus, FB_BLANK_UNBLANK); 1171 else if (event == ATKD_LCD_OFF) 1172 lcd_blank(asus, FB_BLANK_POWERDOWN); 1173 1174 /* TODO Find a better way to handle events count. */ 1175 count = asus->event_count[event % 128]++; 1176 acpi_bus_generate_proc_event(asus->device, event, count); 1177 acpi_bus_generate_netlink_event(asus->device->pnp.device_class, 1178 dev_name(&asus->device->dev), event, 1179 count); 1180 1181 /* Brightness events are special */ 1182 if (event >= ATKD_BR_MIN && event <= ATKD_BR_MAX) { 1183 1184 /* Ignore them completely if the acpi video driver is used */ 1185 if (asus->backlight_device != NULL) { 1186 /* Update the backlight device. */ 1187 asus_backlight_notify(asus); 1188 } 1189 return ; 1190 } 1191 asus_input_notify(asus, event); 1192} 1193 1194#define ASUS_CREATE_DEVICE_ATTR(_name) \ 1195 struct device_attribute dev_attr_##_name = { \ 1196 .attr = { \ 1197 .name = __stringify(_name), \ 1198 .mode = 0 }, \ 1199 .show = NULL, \ 1200 .store = NULL, \ 1201 } 1202 1203#define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \ 1204 do { \ 1205 dev_attr_##_name.attr.mode = _mode; \ 1206 dev_attr_##_name.show = _show; \ 1207 dev_attr_##_name.store = _store; \ 1208 } while(0) 1209 1210static ASUS_CREATE_DEVICE_ATTR(infos); 1211static ASUS_CREATE_DEVICE_ATTR(wlan); 1212static ASUS_CREATE_DEVICE_ATTR(bluetooth); 1213static ASUS_CREATE_DEVICE_ATTR(display); 1214static ASUS_CREATE_DEVICE_ATTR(ledd); 1215static ASUS_CREATE_DEVICE_ATTR(ls_switch); 1216static ASUS_CREATE_DEVICE_ATTR(ls_level); 1217static ASUS_CREATE_DEVICE_ATTR(gps); 1218 1219static struct attribute *asuspf_attributes[] = { 1220 &dev_attr_infos.attr, 1221 &dev_attr_wlan.attr, 1222 &dev_attr_bluetooth.attr, 1223 &dev_attr_display.attr, 1224 &dev_attr_ledd.attr, 1225 &dev_attr_ls_switch.attr, 1226 &dev_attr_ls_level.attr, 1227 &dev_attr_gps.attr, 1228 NULL 1229}; 1230 1231static struct attribute_group platform_attribute_group = { 1232 .attrs = asuspf_attributes 1233}; 1234 1235static int asus_platform_init(struct asus_laptop *asus) 1236{ 1237 int result; 1238 1239 asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1); 1240 if (!asus->platform_device) 1241 return -ENOMEM; 1242 platform_set_drvdata(asus->platform_device, asus); 1243 1244 result = platform_device_add(asus->platform_device); 1245 if (result) 1246 goto fail_platform_device; 1247 1248 result = sysfs_create_group(&asus->platform_device->dev.kobj, 1249 &platform_attribute_group); 1250 if (result) 1251 goto fail_sysfs; 1252 return 0; 1253 1254fail_sysfs: 1255 platform_device_del(asus->platform_device); 1256fail_platform_device: 1257 platform_device_put(asus->platform_device); 1258 return result; 1259} 1260 1261static void asus_platform_exit(struct asus_laptop *asus) 1262{ 1263 sysfs_remove_group(&asus->platform_device->dev.kobj, 1264 &platform_attribute_group); 1265 platform_device_unregister(asus->platform_device); 1266} 1267 1268static struct platform_driver platform_driver = { 1269 .driver = { 1270 .name = ASUS_LAPTOP_FILE, 1271 .owner = THIS_MODULE, 1272 } 1273}; 1274 1275static void asus_laptop_add_fs(struct asus_laptop *asus) 1276{ 1277 ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL); 1278 1279 if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL)) 1280 ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan); 1281 1282 if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL)) 1283 ASUS_SET_DEVICE_ATTR(bluetooth, 0644, 1284 show_bluetooth, store_bluetooth); 1285 1286 if (!acpi_check_handle(asus->handle, METHOD_SWITCH_DISPLAY, NULL)) { 1287 if (display_get_handle) 1288 ASUS_SET_DEVICE_ATTR(display, 0644, show_disp, 1289 store_disp); 1290 else 1291 ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp); 1292 } 1293 1294 if (!acpi_check_handle(asus->handle, METHOD_LEDD, NULL)) 1295 ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd); 1296 1297 if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) && 1298 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) { 1299 ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl); 1300 ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw); 1301 } 1302 1303 if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) && 1304 !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) && 1305 !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL)) 1306 ASUS_SET_DEVICE_ATTR(gps, 0644, show_gps, store_gps); 1307} 1308 1309static int asus_handle_init(char *name, acpi_handle * handle, 1310 char **paths, int num_paths) 1311{ 1312 int i; 1313 acpi_status status; 1314 1315 for (i = 0; i < num_paths; i++) { 1316 status = acpi_get_handle(NULL, paths[i], handle); 1317 if (ACPI_SUCCESS(status)) 1318 return 0; 1319 } 1320 1321 *handle = NULL; 1322 return -ENODEV; 1323} 1324 1325#define ASUS_HANDLE_INIT(object) \ 1326 asus_handle_init(#object, &object##_handle, object##_paths, \ 1327 ARRAY_SIZE(object##_paths)) 1328 1329/* 1330 * This function is used to initialize the context with right values. In this 1331 * method, we can make all the detection we want, and modify the asus_laptop 1332 * struct 1333 */ 1334static int asus_laptop_get_info(struct asus_laptop *asus) 1335{ 1336 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 1337 union acpi_object *model = NULL; 1338 unsigned long long bsts_result, hwrs_result; 1339 char *string = NULL; 1340 acpi_status status; 1341 1342 /* 1343 * Get DSDT headers early enough to allow for differentiating between 1344 * models, but late enough to allow acpi_bus_register_driver() to fail 1345 * before doing anything ACPI-specific. Should we encounter a machine, 1346 * which needs special handling (i.e. its hotkey device has a different 1347 * HID), this bit will be moved. 1348 */ 1349 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info); 1350 if (ACPI_FAILURE(status)) 1351 pr_warning("Couldn't get the DSDT table header\n"); 1352 1353 /* We have to write 0 on init this far for all ASUS models */ 1354 if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) { 1355 pr_err("Hotkey initialization failed\n"); 1356 return -ENODEV; 1357 } 1358 1359 /* This needs to be called for some laptops to init properly */ 1360 status = 1361 acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result); 1362 if (ACPI_FAILURE(status)) 1363 pr_warning("Error calling BSTS\n"); 1364 else if (bsts_result) 1365 pr_notice("BSTS called, 0x%02x returned\n", 1366 (uint) bsts_result); 1367 1368 /* This too ... */ 1369 if (write_acpi_int(asus->handle, "CWAP", wapf)) 1370 pr_err("Error calling CWAP(%d)\n", wapf); 1371 /* 1372 * Try to match the object returned by INIT to the specific model. 1373 * Handle every possible object (or the lack of thereof) the DSDT 1374 * writers might throw at us. When in trouble, we pass NULL to 1375 * asus_model_match() and try something completely different. 1376 */ 1377 if (buffer.pointer) { 1378 model = buffer.pointer; 1379 switch (model->type) { 1380 case ACPI_TYPE_STRING: 1381 string = model->string.pointer; 1382 break; 1383 case ACPI_TYPE_BUFFER: 1384 string = model->buffer.pointer; 1385 break; 1386 default: 1387 string = ""; 1388 break; 1389 } 1390 } 1391 asus->name = kstrdup(string, GFP_KERNEL); 1392 if (!asus->name) 1393 return -ENOMEM; 1394 1395 if (*string) 1396 pr_notice(" %s model detected\n", string); 1397 1398 /* 1399 * The HWRS method return informations about the hardware. 1400 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 1401 * The significance of others is yet to be found. 1402 */ 1403 status = 1404 acpi_evaluate_integer(asus->handle, "HRWS", NULL, &hwrs_result); 1405 if (!ACPI_FAILURE(status)) 1406 pr_notice(" HRWS returned %x", (int)hwrs_result); 1407 1408 if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL)) 1409 asus->have_rsts = true; 1410 1411 /* Scheduled for removal */ 1412 ASUS_HANDLE_INIT(lcd_switch); 1413 ASUS_HANDLE_INIT(display_get); 1414 1415 kfree(model); 1416 1417 return AE_OK; 1418} 1419 1420static bool asus_device_present; 1421 1422static int __devinit asus_acpi_init(struct asus_laptop *asus) 1423{ 1424 int result = 0; 1425 1426 result = acpi_bus_get_status(asus->device); 1427 if (result) 1428 return result; 1429 if (!asus->device->status.present) { 1430 pr_err("Hotkey device not present, aborting\n"); 1431 return -ENODEV; 1432 } 1433 1434 result = asus_laptop_get_info(asus); 1435 if (result) 1436 return result; 1437 1438 asus_laptop_add_fs(asus); 1439 1440 /* WLED and BLED are on by default */ 1441 if (bluetooth_status >= 0) 1442 asus_bluetooth_set(asus, !!bluetooth_status); 1443 1444 if (wlan_status >= 0) 1445 asus_wlan_set(asus, !!wlan_status); 1446 1447 /* Keyboard Backlight is on by default */ 1448 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL)) 1449 asus_kled_set(asus, 1); 1450 1451 /* LED display is off by default */ 1452 asus->ledd_status = 0xFFF; 1453 1454 /* Set initial values of light sensor and level */ 1455 asus->light_switch = 0; /* Default to light sensor disabled */ 1456 asus->light_level = 5; /* level 5 for sensor sensitivity */ 1457 1458 if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) && 1459 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) { 1460 asus_als_switch(asus, asus->light_switch); 1461 asus_als_level(asus, asus->light_level); 1462 } 1463 1464 asus->lcd_state = 1; /* LCD should be on when the module load */ 1465 return result; 1466} 1467 1468static int __devinit asus_acpi_add(struct acpi_device *device) 1469{ 1470 struct asus_laptop *asus; 1471 int result; 1472 1473 pr_notice("Asus Laptop Support version %s\n", 1474 ASUS_LAPTOP_VERSION); 1475 asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL); 1476 if (!asus) 1477 return -ENOMEM; 1478 asus->handle = device->handle; 1479 strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME); 1480 strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS); 1481 device->driver_data = asus; 1482 asus->device = device; 1483 1484 result = asus_acpi_init(asus); 1485 if (result) 1486 goto fail_platform; 1487 1488 /* 1489 * Register the platform device first. It is used as a parent for the 1490 * sub-devices below. 1491 */ 1492 result = asus_platform_init(asus); 1493 if (result) 1494 goto fail_platform; 1495 1496 if (!acpi_video_backlight_support()) { 1497 result = asus_backlight_init(asus); 1498 if (result) 1499 goto fail_backlight; 1500 } else 1501 pr_info("Backlight controlled by ACPI video driver\n"); 1502 1503 result = asus_input_init(asus); 1504 if (result) 1505 goto fail_input; 1506 1507 result = asus_led_init(asus); 1508 if (result) 1509 goto fail_led; 1510 1511 result = asus_rfkill_init(asus); 1512 if (result) 1513 goto fail_rfkill; 1514 1515 asus_device_present = true; 1516 return 0; 1517 1518fail_rfkill: 1519 asus_led_exit(asus); 1520fail_led: 1521 asus_input_exit(asus); 1522fail_input: 1523 asus_backlight_exit(asus); 1524fail_backlight: 1525 asus_platform_exit(asus); 1526fail_platform: 1527 kfree(asus->name); 1528 kfree(asus); 1529 1530 return result; 1531} 1532 1533static int asus_acpi_remove(struct acpi_device *device, int type) 1534{ 1535 struct asus_laptop *asus = acpi_driver_data(device); 1536 1537 asus_backlight_exit(asus); 1538 asus_rfkill_exit(asus); 1539 asus_led_exit(asus); 1540 asus_input_exit(asus); 1541 asus_platform_exit(asus); 1542 1543 kfree(asus->name); 1544 kfree(asus); 1545 return 0; 1546} 1547 1548static const struct acpi_device_id asus_device_ids[] = { 1549 {"ATK0100", 0}, 1550 {"ATK0101", 0}, 1551 {"", 0}, 1552}; 1553MODULE_DEVICE_TABLE(acpi, asus_device_ids); 1554 1555static struct acpi_driver asus_acpi_driver = { 1556 .name = ASUS_LAPTOP_NAME, 1557 .class = ASUS_LAPTOP_CLASS, 1558 .owner = THIS_MODULE, 1559 .ids = asus_device_ids, 1560 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, 1561 .ops = { 1562 .add = asus_acpi_add, 1563 .remove = asus_acpi_remove, 1564 .notify = asus_acpi_notify, 1565 }, 1566}; 1567 1568static int __init asus_laptop_init(void) 1569{ 1570 int result; 1571 1572 result = platform_driver_register(&platform_driver); 1573 if (result < 0) 1574 return result; 1575 1576 result = acpi_bus_register_driver(&asus_acpi_driver); 1577 if (result < 0) 1578 goto fail_acpi_driver; 1579 if (!asus_device_present) { 1580 result = -ENODEV; 1581 goto fail_no_device; 1582 } 1583 return 0; 1584 1585fail_no_device: 1586 acpi_bus_unregister_driver(&asus_acpi_driver); 1587fail_acpi_driver: 1588 platform_driver_unregister(&platform_driver); 1589 return result; 1590} 1591 1592static void __exit asus_laptop_exit(void) 1593{ 1594 acpi_bus_unregister_driver(&asus_acpi_driver); 1595 platform_driver_unregister(&platform_driver); 1596} 1597 1598module_init(asus_laptop_init); 1599module_exit(asus_laptop_exit); 1600