asus-laptop.c revision 2a1fd64cb70a42563d2313eb70c6495d2c88b36d
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 if (!display_get_handle) 922 return -ENODEV; 923 return sprintf(buf, "%d\n", read_display(asus)); 924} 925 926/* 927 * Experimental support for display switching. As of now: 1 should activate 928 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI. 929 * Any combination (bitwise) of these will suffice. I never actually tested 4 930 * displays hooked up simultaneously, so be warned. See the acpi4asus README 931 * for more info. 932 */ 933static ssize_t store_disp(struct device *dev, struct device_attribute *attr, 934 const char *buf, size_t count) 935{ 936 struct asus_laptop *asus = dev_get_drvdata(dev); 937 int rv, value; 938 939 rv = parse_arg(buf, count, &value); 940 if (rv > 0) 941 asus_set_display(asus, value); 942 return rv; 943} 944 945/* 946 * Light Sens 947 */ 948static void asus_als_switch(struct asus_laptop *asus, int value) 949{ 950 if (write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value)) 951 pr_warning("Error setting light sensor switch\n"); 952 asus->light_switch = value; 953} 954 955static ssize_t show_lssw(struct device *dev, 956 struct device_attribute *attr, char *buf) 957{ 958 struct asus_laptop *asus = dev_get_drvdata(dev); 959 960 return sprintf(buf, "%d\n", asus->light_switch); 961} 962 963static ssize_t store_lssw(struct device *dev, struct device_attribute *attr, 964 const char *buf, size_t count) 965{ 966 struct asus_laptop *asus = dev_get_drvdata(dev); 967 int rv, value; 968 969 rv = parse_arg(buf, count, &value); 970 if (rv > 0) 971 asus_als_switch(asus, value ? 1 : 0); 972 973 return rv; 974} 975 976static void asus_als_level(struct asus_laptop *asus, int value) 977{ 978 if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value)) 979 pr_warning("Error setting light sensor level\n"); 980 asus->light_level = value; 981} 982 983static ssize_t show_lslvl(struct device *dev, 984 struct device_attribute *attr, char *buf) 985{ 986 struct asus_laptop *asus = dev_get_drvdata(dev); 987 988 return sprintf(buf, "%d\n", asus->light_level); 989} 990 991static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr, 992 const char *buf, size_t count) 993{ 994 struct asus_laptop *asus = dev_get_drvdata(dev); 995 int rv, value; 996 997 rv = parse_arg(buf, count, &value); 998 if (rv > 0) { 999 value = (0 < value) ? ((15 < value) ? 15 : value) : 0; 1000 /* 0 <= value <= 15 */ 1001 asus_als_level(asus, value); 1002 } 1003 1004 return rv; 1005} 1006 1007/* 1008 * GPS 1009 */ 1010static int asus_gps_status(struct asus_laptop *asus) 1011{ 1012 unsigned long long status; 1013 acpi_status rv = AE_OK; 1014 1015 rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS, 1016 NULL, &status); 1017 if (ACPI_FAILURE(rv)) { 1018 pr_warning("Error reading GPS status\n"); 1019 return -ENODEV; 1020 } 1021 return !!status; 1022} 1023 1024static int asus_gps_switch(struct asus_laptop *asus, int status) 1025{ 1026 const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF; 1027 1028 if (write_acpi_int(asus->handle, meth, 0x02)) 1029 return -ENODEV; 1030 return 0; 1031} 1032 1033static ssize_t show_gps(struct device *dev, 1034 struct device_attribute *attr, char *buf) 1035{ 1036 struct asus_laptop *asus = dev_get_drvdata(dev); 1037 1038 return sprintf(buf, "%d\n", asus_gps_status(asus)); 1039} 1040 1041static ssize_t store_gps(struct device *dev, struct device_attribute *attr, 1042 const char *buf, size_t count) 1043{ 1044 struct asus_laptop *asus = dev_get_drvdata(dev); 1045 int rv, value; 1046 int ret; 1047 1048 rv = parse_arg(buf, count, &value); 1049 if (rv <= 0) 1050 return -EINVAL; 1051 ret = asus_gps_switch(asus, !!value); 1052 if (ret) 1053 return ret; 1054 rfkill_set_sw_state(asus->gps_rfkill, !value); 1055 return rv; 1056} 1057 1058/* 1059 * rfkill 1060 */ 1061static int asus_gps_rfkill_set(void *data, bool blocked) 1062{ 1063 acpi_handle handle = data; 1064 1065 return asus_gps_switch(handle, !blocked); 1066} 1067 1068static const struct rfkill_ops asus_gps_rfkill_ops = { 1069 .set_block = asus_gps_rfkill_set, 1070}; 1071 1072static void asus_rfkill_exit(struct asus_laptop *asus) 1073{ 1074 if (asus->gps_rfkill) { 1075 rfkill_unregister(asus->gps_rfkill); 1076 rfkill_destroy(asus->gps_rfkill); 1077 asus->gps_rfkill = NULL; 1078 } 1079} 1080 1081static int asus_rfkill_init(struct asus_laptop *asus) 1082{ 1083 int result; 1084 1085 if (acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) || 1086 acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) || 1087 acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL)) 1088 return 0; 1089 1090 asus->gps_rfkill = rfkill_alloc("asus-gps", &asus->platform_device->dev, 1091 RFKILL_TYPE_GPS, 1092 &asus_gps_rfkill_ops, NULL); 1093 if (!asus->gps_rfkill) 1094 return -EINVAL; 1095 1096 result = rfkill_register(asus->gps_rfkill); 1097 if (result) { 1098 rfkill_destroy(asus->gps_rfkill); 1099 asus->gps_rfkill = NULL; 1100 } 1101 1102 return result; 1103} 1104 1105/* 1106 * Input device (i.e. hotkeys) 1107 */ 1108static void asus_input_notify(struct asus_laptop *asus, int event) 1109{ 1110 if (asus->inputdev) 1111 sparse_keymap_report_event(asus->inputdev, event, 1, true); 1112} 1113 1114static int asus_input_init(struct asus_laptop *asus) 1115{ 1116 struct input_dev *input; 1117 int error; 1118 1119 input = input_allocate_device(); 1120 if (!input) { 1121 pr_info("Unable to allocate input device\n"); 1122 return 0; 1123 } 1124 input->name = "Asus Laptop extra buttons"; 1125 input->phys = ASUS_LAPTOP_FILE "/input0"; 1126 input->id.bustype = BUS_HOST; 1127 input->dev.parent = &asus->platform_device->dev; 1128 input_set_drvdata(input, asus); 1129 1130 error = sparse_keymap_setup(input, asus_keymap, NULL); 1131 if (error) { 1132 pr_err("Unable to setup input device keymap\n"); 1133 goto err_keymap; 1134 } 1135 error = input_register_device(input); 1136 if (error) { 1137 pr_info("Unable to register input device\n"); 1138 goto err_device; 1139 } 1140 1141 asus->inputdev = input; 1142 return 0; 1143 1144err_keymap: 1145 sparse_keymap_free(input); 1146err_device: 1147 input_free_device(input); 1148 return error; 1149} 1150 1151static void asus_input_exit(struct asus_laptop *asus) 1152{ 1153 if (asus->inputdev) { 1154 sparse_keymap_free(asus->inputdev); 1155 input_unregister_device(asus->inputdev); 1156 } 1157} 1158 1159/* 1160 * ACPI driver 1161 */ 1162static void asus_acpi_notify(struct acpi_device *device, u32 event) 1163{ 1164 struct asus_laptop *asus = acpi_driver_data(device); 1165 u16 count; 1166 1167 /* 1168 * We need to tell the backlight device when the backlight power is 1169 * switched 1170 */ 1171 if (event == ATKD_LCD_ON) 1172 lcd_blank(asus, FB_BLANK_UNBLANK); 1173 else if (event == ATKD_LCD_OFF) 1174 lcd_blank(asus, FB_BLANK_POWERDOWN); 1175 1176 /* TODO Find a better way to handle events count. */ 1177 count = asus->event_count[event % 128]++; 1178 acpi_bus_generate_proc_event(asus->device, event, count); 1179 acpi_bus_generate_netlink_event(asus->device->pnp.device_class, 1180 dev_name(&asus->device->dev), event, 1181 count); 1182 1183 /* Brightness events are special */ 1184 if (event >= ATKD_BR_MIN && event <= ATKD_BR_MAX) { 1185 1186 /* Ignore them completely if the acpi video driver is used */ 1187 if (asus->backlight_device != NULL) { 1188 /* Update the backlight device. */ 1189 asus_backlight_notify(asus); 1190 } 1191 return ; 1192 } 1193 asus_input_notify(asus, event); 1194} 1195 1196static DEVICE_ATTR(infos, S_IRUGO, show_infos, NULL); 1197static DEVICE_ATTR(wlan, S_IRUGO | S_IWUSR, show_wlan, store_wlan); 1198static DEVICE_ATTR(bluetooth, S_IRUGO | S_IWUSR, show_bluetooth, 1199 store_bluetooth); 1200static DEVICE_ATTR(display, S_IRUGO | S_IWUSR, show_disp, store_disp); 1201static DEVICE_ATTR(ledd, S_IRUGO | S_IWUSR, show_ledd, store_ledd); 1202static DEVICE_ATTR(ls_level, S_IRUGO | S_IWUSR, show_lslvl, store_lslvl); 1203static DEVICE_ATTR(ls_switch, S_IRUGO | S_IWUSR, show_lssw, store_lssw); 1204static DEVICE_ATTR(gps, S_IRUGO | S_IWUSR, show_gps, store_gps); 1205 1206static void asus_sysfs_exit(struct asus_laptop *asus) 1207{ 1208 struct platform_device *device = asus->platform_device; 1209 1210 device_remove_file(&device->dev, &dev_attr_infos); 1211 device_remove_file(&device->dev, &dev_attr_wlan); 1212 device_remove_file(&device->dev, &dev_attr_bluetooth); 1213 device_remove_file(&device->dev, &dev_attr_display); 1214 device_remove_file(&device->dev, &dev_attr_ledd); 1215 device_remove_file(&device->dev, &dev_attr_ls_switch); 1216 device_remove_file(&device->dev, &dev_attr_ls_level); 1217 device_remove_file(&device->dev, &dev_attr_gps); 1218} 1219 1220static int asus_sysfs_init(struct asus_laptop *asus) 1221{ 1222 struct platform_device *device = asus->platform_device; 1223 int err; 1224 1225 err = device_create_file(&device->dev, &dev_attr_infos); 1226 if (err) 1227 return err; 1228 1229 if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL)) { 1230 err = device_create_file(&device->dev, &dev_attr_wlan); 1231 if (err) 1232 return err; 1233 } 1234 1235 if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL)) { 1236 err = device_create_file(&device->dev, &dev_attr_bluetooth); 1237 if (err) 1238 return err; 1239 } 1240 1241 if (!acpi_check_handle(asus->handle, METHOD_SWITCH_DISPLAY, NULL)) { 1242 err = device_create_file(&device->dev, &dev_attr_display); 1243 if (err) 1244 return err; 1245 } 1246 1247 if (!acpi_check_handle(asus->handle, METHOD_LEDD, NULL)) { 1248 err = device_create_file(&device->dev, &dev_attr_ledd); 1249 if (err) 1250 return err; 1251 } 1252 1253 if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) && 1254 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) { 1255 err = device_create_file(&device->dev, &dev_attr_ls_switch); 1256 if (err) 1257 return err; 1258 err = device_create_file(&device->dev, &dev_attr_ls_level); 1259 if (err) 1260 return err; 1261 } 1262 1263 if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) && 1264 !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) && 1265 !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL)) { 1266 err = device_create_file(&device->dev, &dev_attr_gps); 1267 if (err) 1268 return err; 1269 } 1270 1271 return err; 1272} 1273 1274static int asus_platform_init(struct asus_laptop *asus) 1275{ 1276 int err; 1277 1278 asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1); 1279 if (!asus->platform_device) 1280 return -ENOMEM; 1281 platform_set_drvdata(asus->platform_device, asus); 1282 1283 err = platform_device_add(asus->platform_device); 1284 if (err) 1285 goto fail_platform_device; 1286 1287 err = asus_sysfs_init(asus); 1288 if (err) 1289 goto fail_sysfs; 1290 return 0; 1291 1292fail_sysfs: 1293 asus_sysfs_exit(asus); 1294 platform_device_del(asus->platform_device); 1295fail_platform_device: 1296 platform_device_put(asus->platform_device); 1297 return err; 1298} 1299 1300static void asus_platform_exit(struct asus_laptop *asus) 1301{ 1302 asus_sysfs_exit(asus); 1303 platform_device_unregister(asus->platform_device); 1304} 1305 1306static struct platform_driver platform_driver = { 1307 .driver = { 1308 .name = ASUS_LAPTOP_FILE, 1309 .owner = THIS_MODULE, 1310 } 1311}; 1312 1313static int asus_handle_init(char *name, acpi_handle * handle, 1314 char **paths, int num_paths) 1315{ 1316 int i; 1317 acpi_status status; 1318 1319 for (i = 0; i < num_paths; i++) { 1320 status = acpi_get_handle(NULL, paths[i], handle); 1321 if (ACPI_SUCCESS(status)) 1322 return 0; 1323 } 1324 1325 *handle = NULL; 1326 return -ENODEV; 1327} 1328 1329#define ASUS_HANDLE_INIT(object) \ 1330 asus_handle_init(#object, &object##_handle, object##_paths, \ 1331 ARRAY_SIZE(object##_paths)) 1332 1333/* 1334 * This function is used to initialize the context with right values. In this 1335 * method, we can make all the detection we want, and modify the asus_laptop 1336 * struct 1337 */ 1338static int asus_laptop_get_info(struct asus_laptop *asus) 1339{ 1340 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 1341 union acpi_object *model = NULL; 1342 unsigned long long bsts_result, hwrs_result; 1343 char *string = NULL; 1344 acpi_status status; 1345 1346 /* 1347 * Get DSDT headers early enough to allow for differentiating between 1348 * models, but late enough to allow acpi_bus_register_driver() to fail 1349 * before doing anything ACPI-specific. Should we encounter a machine, 1350 * which needs special handling (i.e. its hotkey device has a different 1351 * HID), this bit will be moved. 1352 */ 1353 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info); 1354 if (ACPI_FAILURE(status)) 1355 pr_warning("Couldn't get the DSDT table header\n"); 1356 1357 /* We have to write 0 on init this far for all ASUS models */ 1358 if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) { 1359 pr_err("Hotkey initialization failed\n"); 1360 return -ENODEV; 1361 } 1362 1363 /* This needs to be called for some laptops to init properly */ 1364 status = 1365 acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result); 1366 if (ACPI_FAILURE(status)) 1367 pr_warning("Error calling BSTS\n"); 1368 else if (bsts_result) 1369 pr_notice("BSTS called, 0x%02x returned\n", 1370 (uint) bsts_result); 1371 1372 /* This too ... */ 1373 if (write_acpi_int(asus->handle, "CWAP", wapf)) 1374 pr_err("Error calling CWAP(%d)\n", wapf); 1375 /* 1376 * Try to match the object returned by INIT to the specific model. 1377 * Handle every possible object (or the lack of thereof) the DSDT 1378 * writers might throw at us. When in trouble, we pass NULL to 1379 * asus_model_match() and try something completely different. 1380 */ 1381 if (buffer.pointer) { 1382 model = buffer.pointer; 1383 switch (model->type) { 1384 case ACPI_TYPE_STRING: 1385 string = model->string.pointer; 1386 break; 1387 case ACPI_TYPE_BUFFER: 1388 string = model->buffer.pointer; 1389 break; 1390 default: 1391 string = ""; 1392 break; 1393 } 1394 } 1395 asus->name = kstrdup(string, GFP_KERNEL); 1396 if (!asus->name) 1397 return -ENOMEM; 1398 1399 if (*string) 1400 pr_notice(" %s model detected\n", string); 1401 1402 /* 1403 * The HWRS method return informations about the hardware. 1404 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 1405 * The significance of others is yet to be found. 1406 */ 1407 status = 1408 acpi_evaluate_integer(asus->handle, "HRWS", NULL, &hwrs_result); 1409 if (!ACPI_FAILURE(status)) 1410 pr_notice(" HRWS returned %x", (int)hwrs_result); 1411 1412 if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL)) 1413 asus->have_rsts = true; 1414 1415 /* Scheduled for removal */ 1416 ASUS_HANDLE_INIT(lcd_switch); 1417 ASUS_HANDLE_INIT(display_get); 1418 1419 kfree(model); 1420 1421 return AE_OK; 1422} 1423 1424static bool asus_device_present; 1425 1426static int __devinit asus_acpi_init(struct asus_laptop *asus) 1427{ 1428 int result = 0; 1429 1430 result = acpi_bus_get_status(asus->device); 1431 if (result) 1432 return result; 1433 if (!asus->device->status.present) { 1434 pr_err("Hotkey device not present, aborting\n"); 1435 return -ENODEV; 1436 } 1437 1438 result = asus_laptop_get_info(asus); 1439 if (result) 1440 return result; 1441 1442 /* WLED and BLED are on by default */ 1443 if (bluetooth_status >= 0) 1444 asus_bluetooth_set(asus, !!bluetooth_status); 1445 1446 if (wlan_status >= 0) 1447 asus_wlan_set(asus, !!wlan_status); 1448 1449 /* Keyboard Backlight is on by default */ 1450 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL)) 1451 asus_kled_set(asus, 1); 1452 1453 /* LED display is off by default */ 1454 asus->ledd_status = 0xFFF; 1455 1456 /* Set initial values of light sensor and level */ 1457 asus->light_switch = 0; /* Default to light sensor disabled */ 1458 asus->light_level = 5; /* level 5 for sensor sensitivity */ 1459 1460 if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) && 1461 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) { 1462 asus_als_switch(asus, asus->light_switch); 1463 asus_als_level(asus, asus->light_level); 1464 } 1465 1466 asus->lcd_state = 1; /* LCD should be on when the module load */ 1467 return result; 1468} 1469 1470static int __devinit asus_acpi_add(struct acpi_device *device) 1471{ 1472 struct asus_laptop *asus; 1473 int result; 1474 1475 pr_notice("Asus Laptop Support version %s\n", 1476 ASUS_LAPTOP_VERSION); 1477 asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL); 1478 if (!asus) 1479 return -ENOMEM; 1480 asus->handle = device->handle; 1481 strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME); 1482 strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS); 1483 device->driver_data = asus; 1484 asus->device = device; 1485 1486 result = asus_acpi_init(asus); 1487 if (result) 1488 goto fail_platform; 1489 1490 /* 1491 * Register the platform device first. It is used as a parent for the 1492 * sub-devices below. 1493 */ 1494 result = asus_platform_init(asus); 1495 if (result) 1496 goto fail_platform; 1497 1498 if (!acpi_video_backlight_support()) { 1499 result = asus_backlight_init(asus); 1500 if (result) 1501 goto fail_backlight; 1502 } else 1503 pr_info("Backlight controlled by ACPI video driver\n"); 1504 1505 result = asus_input_init(asus); 1506 if (result) 1507 goto fail_input; 1508 1509 result = asus_led_init(asus); 1510 if (result) 1511 goto fail_led; 1512 1513 result = asus_rfkill_init(asus); 1514 if (result) 1515 goto fail_rfkill; 1516 1517 asus_device_present = true; 1518 return 0; 1519 1520fail_rfkill: 1521 asus_led_exit(asus); 1522fail_led: 1523 asus_input_exit(asus); 1524fail_input: 1525 asus_backlight_exit(asus); 1526fail_backlight: 1527 asus_platform_exit(asus); 1528fail_platform: 1529 kfree(asus->name); 1530 kfree(asus); 1531 1532 return result; 1533} 1534 1535static int asus_acpi_remove(struct acpi_device *device, int type) 1536{ 1537 struct asus_laptop *asus = acpi_driver_data(device); 1538 1539 asus_backlight_exit(asus); 1540 asus_rfkill_exit(asus); 1541 asus_led_exit(asus); 1542 asus_input_exit(asus); 1543 asus_platform_exit(asus); 1544 1545 kfree(asus->name); 1546 kfree(asus); 1547 return 0; 1548} 1549 1550static const struct acpi_device_id asus_device_ids[] = { 1551 {"ATK0100", 0}, 1552 {"ATK0101", 0}, 1553 {"", 0}, 1554}; 1555MODULE_DEVICE_TABLE(acpi, asus_device_ids); 1556 1557static struct acpi_driver asus_acpi_driver = { 1558 .name = ASUS_LAPTOP_NAME, 1559 .class = ASUS_LAPTOP_CLASS, 1560 .owner = THIS_MODULE, 1561 .ids = asus_device_ids, 1562 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, 1563 .ops = { 1564 .add = asus_acpi_add, 1565 .remove = asus_acpi_remove, 1566 .notify = asus_acpi_notify, 1567 }, 1568}; 1569 1570static int __init asus_laptop_init(void) 1571{ 1572 int result; 1573 1574 result = platform_driver_register(&platform_driver); 1575 if (result < 0) 1576 return result; 1577 1578 result = acpi_bus_register_driver(&asus_acpi_driver); 1579 if (result < 0) 1580 goto fail_acpi_driver; 1581 if (!asus_device_present) { 1582 result = -ENODEV; 1583 goto fail_no_device; 1584 } 1585 return 0; 1586 1587fail_no_device: 1588 acpi_bus_unregister_driver(&asus_acpi_driver); 1589fail_acpi_driver: 1590 platform_driver_unregister(&platform_driver); 1591 return result; 1592} 1593 1594static void __exit asus_laptop_exit(void) 1595{ 1596 acpi_bus_unregister_driver(&asus_acpi_driver); 1597 platform_driver_unregister(&platform_driver); 1598} 1599 1600module_init(asus_laptop_init); 1601module_exit(asus_laptop_exit); 1602