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 <linux/uaccess.h> 49#include <linux/input.h> 50#include <linux/input/sparse-keymap.h> 51#include <linux/rfkill.h> 52#include <linux/slab.h> 53#include <acpi/acpi_drivers.h> 54#include <acpi/acpi_bus.h> 55 56#define ASUS_LAPTOP_VERSION "0.42" 57 58#define ASUS_LAPTOP_NAME "Asus Laptop Support" 59#define ASUS_LAPTOP_CLASS "hotkey" 60#define ASUS_LAPTOP_DEVICE_NAME "Hotkey" 61#define ASUS_LAPTOP_FILE KBUILD_MODNAME 62#define ASUS_LAPTOP_PREFIX "\\_SB.ATKD." 63 64MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary"); 65MODULE_DESCRIPTION(ASUS_LAPTOP_NAME); 66MODULE_LICENSE("GPL"); 67 68/* 69 * WAPF defines the behavior of the Fn+Fx wlan key 70 * The significance of values is yet to be found, but 71 * most of the time: 72 * 0x0 will do nothing 73 * 0x1 will allow to control the device with Fn+Fx key. 74 * 0x4 will send an ACPI event (0x88) while pressing the Fn+Fx key 75 * 0x5 like 0x1 or 0x4 76 * So, if something doesn't work as you want, just try other values =) 77 */ 78static uint wapf = 1; 79module_param(wapf, uint, 0444); 80MODULE_PARM_DESC(wapf, "WAPF value"); 81 82static int wlan_status = 1; 83static int bluetooth_status = 1; 84 85module_param(wlan_status, int, 0444); 86MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot " 87 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 88 "default is 1"); 89 90module_param(bluetooth_status, int, 0444); 91MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot " 92 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 93 "default is 1"); 94 95/* 96 * Some events we use, same for all Asus 97 */ 98#define ATKD_BR_UP 0x10 /* (event & ~ATKD_BR_UP) = brightness level */ 99#define ATKD_BR_DOWN 0x20 /* (event & ~ATKD_BR_DOWN) = britghness level */ 100#define ATKD_BR_MIN ATKD_BR_UP 101#define ATKD_BR_MAX (ATKD_BR_DOWN | 0xF) /* 0x2f */ 102#define ATKD_LCD_ON 0x33 103#define ATKD_LCD_OFF 0x34 104 105/* 106 * Known bits returned by \_SB.ATKD.HWRS 107 */ 108#define WL_HWRS 0x80 109#define BT_HWRS 0x100 110 111/* 112 * Flags for hotk status 113 * WL_ON and BT_ON are also used for wireless_status() 114 */ 115#define WL_RSTS 0x01 /* internal Wifi */ 116#define BT_RSTS 0x02 /* internal Bluetooth */ 117 118/* LED */ 119#define METHOD_MLED "MLED" 120#define METHOD_TLED "TLED" 121#define METHOD_RLED "RLED" /* W1JC */ 122#define METHOD_PLED "PLED" /* A7J */ 123#define METHOD_GLED "GLED" /* G1, G2 (probably) */ 124 125/* LEDD */ 126#define METHOD_LEDD "SLCM" 127 128/* 129 * Bluetooth and WLAN 130 * WLED and BLED are not handled like other XLED, because in some dsdt 131 * they also control the WLAN/Bluetooth device. 132 */ 133#define METHOD_WLAN "WLED" 134#define METHOD_BLUETOOTH "BLED" 135#define METHOD_WL_STATUS "RSTS" 136 137/* Brightness */ 138#define METHOD_BRIGHTNESS_SET "SPLV" 139#define METHOD_BRIGHTNESS_GET "GPLV" 140 141/* Backlight */ 142static acpi_handle lcd_switch_handle; 143static char *lcd_switch_paths[] = { 144 "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */ 145 "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */ 146 "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */ 147 "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */ 148 "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */ 149 "\\_SB.PCI0.LPCB.EC0._Q0E", /* P30/P35 */ 150 "\\_SB.PCI0.PX40.Q10", /* S1x */ 151 "\\Q10"}; /* A2x, L2D, L3D, M2E */ 152 153/* Display */ 154#define METHOD_SWITCH_DISPLAY "SDSP" 155 156static acpi_handle display_get_handle; 157static char *display_get_paths[] = { 158 /* A6B, A6K A6R A7D F3JM L4R M6R A3G M6A M6V VX-1 V6J V6V W3Z */ 159 "\\_SB.PCI0.P0P1.VGA.GETD", 160 /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V S5A M5A z33A W1Jc W2V G1 */ 161 "\\_SB.PCI0.P0P2.VGA.GETD", 162 /* A6V A6Q */ 163 "\\_SB.PCI0.P0P3.VGA.GETD", 164 /* A6T, A6M */ 165 "\\_SB.PCI0.P0PA.VGA.GETD", 166 /* L3C */ 167 "\\_SB.PCI0.PCI1.VGAC.NMAP", 168 /* Z96F */ 169 "\\_SB.PCI0.VGA.GETD", 170 /* A2D */ 171 "\\ACTD", 172 /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */ 173 "\\ADVG", 174 /* P30 */ 175 "\\DNXT", 176 /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */ 177 "\\INFB", 178 /* A3F A6F A3N A3L M6N W3N W6A */ 179 "\\SSTE"}; 180 181#define METHOD_ALS_CONTROL "ALSC" /* Z71A Z71V */ 182#define METHOD_ALS_LEVEL "ALSL" /* Z71A Z71V */ 183 184/* GPS */ 185/* R2H use different handle for GPS on/off */ 186#define METHOD_GPS_ON "SDON" 187#define METHOD_GPS_OFF "SDOF" 188#define METHOD_GPS_STATUS "GPST" 189 190/* Keyboard light */ 191#define METHOD_KBD_LIGHT_SET "SLKB" 192#define METHOD_KBD_LIGHT_GET "GLKB" 193 194/* 195 * Define a specific led structure to keep the main structure clean 196 */ 197struct asus_led { 198 int wk; 199 struct work_struct work; 200 struct led_classdev led; 201 struct asus_laptop *asus; 202 const char *method; 203}; 204 205/* 206 * This is the main structure, we can use it to store anything interesting 207 * about the hotk device 208 */ 209struct asus_laptop { 210 char *name; /* laptop name */ 211 212 struct acpi_table_header *dsdt_info; 213 struct platform_device *platform_device; 214 struct acpi_device *device; /* the device we are in */ 215 struct backlight_device *backlight_device; 216 217 struct input_dev *inputdev; 218 struct key_entry *keymap; 219 220 struct asus_led mled; 221 struct asus_led tled; 222 struct asus_led rled; 223 struct asus_led pled; 224 struct asus_led gled; 225 struct asus_led kled; 226 struct workqueue_struct *led_workqueue; 227 228 int wireless_status; 229 bool have_rsts; 230 int lcd_state; 231 232 struct rfkill *gps_rfkill; 233 234 acpi_handle handle; /* the handle of the hotk device */ 235 u32 ledd_status; /* status of the LED display */ 236 u8 light_level; /* light sensor level */ 237 u8 light_switch; /* light sensor switch value */ 238 u16 event_count[128]; /* count for each event TODO make this better */ 239 u16 *keycode_map; 240}; 241 242static const struct key_entry asus_keymap[] = { 243 /* Lenovo SL Specific keycodes */ 244 {KE_KEY, 0x02, { KEY_SCREENLOCK } }, 245 {KE_KEY, 0x05, { KEY_WLAN } }, 246 {KE_KEY, 0x08, { KEY_F13 } }, 247 {KE_KEY, 0x17, { KEY_ZOOM } }, 248 {KE_KEY, 0x1f, { KEY_BATTERY } }, 249 /* End of Lenovo SL Specific keycodes */ 250 {KE_KEY, 0x30, { KEY_VOLUMEUP } }, 251 {KE_KEY, 0x31, { KEY_VOLUMEDOWN } }, 252 {KE_KEY, 0x32, { KEY_MUTE } }, 253 {KE_KEY, 0x33, { KEY_SWITCHVIDEOMODE } }, 254 {KE_KEY, 0x34, { KEY_SWITCHVIDEOMODE } }, 255 {KE_KEY, 0x40, { KEY_PREVIOUSSONG } }, 256 {KE_KEY, 0x41, { KEY_NEXTSONG } }, 257 {KE_KEY, 0x43, { KEY_STOPCD } }, 258 {KE_KEY, 0x45, { KEY_PLAYPAUSE } }, 259 {KE_KEY, 0x4c, { KEY_MEDIA } }, 260 {KE_KEY, 0x50, { KEY_EMAIL } }, 261 {KE_KEY, 0x51, { KEY_WWW } }, 262 {KE_KEY, 0x55, { KEY_CALC } }, 263 {KE_KEY, 0x5C, { KEY_SCREENLOCK } }, /* Screenlock */ 264 {KE_KEY, 0x5D, { KEY_WLAN } }, 265 {KE_KEY, 0x5E, { KEY_WLAN } }, 266 {KE_KEY, 0x5F, { KEY_WLAN } }, 267 {KE_KEY, 0x60, { KEY_SWITCHVIDEOMODE } }, 268 {KE_KEY, 0x61, { KEY_SWITCHVIDEOMODE } }, 269 {KE_KEY, 0x62, { KEY_SWITCHVIDEOMODE } }, 270 {KE_KEY, 0x63, { KEY_SWITCHVIDEOMODE } }, 271 {KE_KEY, 0x6B, { KEY_F13 } }, /* Lock Touchpad */ 272 {KE_KEY, 0x7E, { KEY_BLUETOOTH } }, 273 {KE_KEY, 0x7D, { KEY_BLUETOOTH } }, 274 {KE_KEY, 0x82, { KEY_CAMERA } }, 275 {KE_KEY, 0x88, { KEY_WLAN } }, 276 {KE_KEY, 0x8A, { KEY_PROG1 } }, 277 {KE_KEY, 0x95, { KEY_MEDIA } }, 278 {KE_KEY, 0x99, { KEY_PHONE } }, 279 {KE_KEY, 0xc4, { KEY_KBDILLUMUP } }, 280 {KE_KEY, 0xc5, { KEY_KBDILLUMDOWN } }, 281 {KE_END, 0}, 282}; 283 284 285/* 286 * This function evaluates an ACPI method, given an int as parameter, the 287 * method is searched within the scope of the handle, can be NULL. The output 288 * of the method is written is output, which can also be NULL 289 * 290 * returns 0 if write is successful, -1 else. 291 */ 292static int write_acpi_int_ret(acpi_handle handle, const char *method, int val, 293 struct acpi_buffer *output) 294{ 295 struct acpi_object_list params; /* list of input parameters (an int) */ 296 union acpi_object in_obj; /* the only param we use */ 297 acpi_status status; 298 299 if (!handle) 300 return -1; 301 302 params.count = 1; 303 params.pointer = &in_obj; 304 in_obj.type = ACPI_TYPE_INTEGER; 305 in_obj.integer.value = val; 306 307 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); 308 if (status == AE_OK) 309 return 0; 310 else 311 return -1; 312} 313 314static int write_acpi_int(acpi_handle handle, const char *method, int val) 315{ 316 return write_acpi_int_ret(handle, method, val, NULL); 317} 318 319static int acpi_check_handle(acpi_handle handle, const char *method, 320 acpi_handle *ret) 321{ 322 acpi_status status; 323 324 if (method == NULL) 325 return -ENODEV; 326 327 if (ret) 328 status = acpi_get_handle(handle, (char *)method, 329 ret); 330 else { 331 acpi_handle dummy; 332 333 status = acpi_get_handle(handle, (char *)method, 334 &dummy); 335 } 336 337 if (status != AE_OK) { 338 if (ret) 339 pr_warning("Error finding %s\n", method); 340 return -ENODEV; 341 } 342 return 0; 343} 344 345/* Generic LED function */ 346static int asus_led_set(struct asus_laptop *asus, const char *method, 347 int value) 348{ 349 if (!strcmp(method, METHOD_MLED)) 350 value = !value; 351 else if (!strcmp(method, METHOD_GLED)) 352 value = !value + 1; 353 else 354 value = !!value; 355 356 return write_acpi_int(asus->handle, method, value); 357} 358 359/* 360 * LEDs 361 */ 362/* /sys/class/led handlers */ 363static void asus_led_cdev_set(struct led_classdev *led_cdev, 364 enum led_brightness value) 365{ 366 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 367 struct asus_laptop *asus = led->asus; 368 369 led->wk = !!value; 370 queue_work(asus->led_workqueue, &led->work); 371} 372 373static void asus_led_cdev_update(struct work_struct *work) 374{ 375 struct asus_led *led = container_of(work, struct asus_led, work); 376 struct asus_laptop *asus = led->asus; 377 378 asus_led_set(asus, led->method, led->wk); 379} 380 381static enum led_brightness asus_led_cdev_get(struct led_classdev *led_cdev) 382{ 383 return led_cdev->brightness; 384} 385 386/* 387 * Keyboard backlight (also a LED) 388 */ 389static int asus_kled_lvl(struct asus_laptop *asus) 390{ 391 unsigned long long kblv; 392 struct acpi_object_list params; 393 union acpi_object in_obj; 394 acpi_status rv; 395 396 params.count = 1; 397 params.pointer = &in_obj; 398 in_obj.type = ACPI_TYPE_INTEGER; 399 in_obj.integer.value = 2; 400 401 rv = acpi_evaluate_integer(asus->handle, METHOD_KBD_LIGHT_GET, 402 ¶ms, &kblv); 403 if (ACPI_FAILURE(rv)) { 404 pr_warning("Error reading kled level\n"); 405 return -ENODEV; 406 } 407 return kblv; 408} 409 410static int asus_kled_set(struct asus_laptop *asus, int kblv) 411{ 412 if (kblv > 0) 413 kblv = (1 << 7) | (kblv & 0x7F); 414 else 415 kblv = 0; 416 417 if (write_acpi_int(asus->handle, METHOD_KBD_LIGHT_SET, kblv)) { 418 pr_warning("Keyboard LED display write failed\n"); 419 return -EINVAL; 420 } 421 return 0; 422} 423 424static void asus_kled_cdev_set(struct led_classdev *led_cdev, 425 enum led_brightness value) 426{ 427 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 428 struct asus_laptop *asus = led->asus; 429 430 led->wk = value; 431 queue_work(asus->led_workqueue, &led->work); 432} 433 434static void asus_kled_cdev_update(struct work_struct *work) 435{ 436 struct asus_led *led = container_of(work, struct asus_led, work); 437 struct asus_laptop *asus = led->asus; 438 439 asus_kled_set(asus, led->wk); 440} 441 442static enum led_brightness asus_kled_cdev_get(struct led_classdev *led_cdev) 443{ 444 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 445 struct asus_laptop *asus = led->asus; 446 447 return asus_kled_lvl(asus); 448} 449 450static void asus_led_exit(struct asus_laptop *asus) 451{ 452 if (asus->mled.led.dev) 453 led_classdev_unregister(&asus->mled.led); 454 if (asus->tled.led.dev) 455 led_classdev_unregister(&asus->tled.led); 456 if (asus->pled.led.dev) 457 led_classdev_unregister(&asus->pled.led); 458 if (asus->rled.led.dev) 459 led_classdev_unregister(&asus->rled.led); 460 if (asus->gled.led.dev) 461 led_classdev_unregister(&asus->gled.led); 462 if (asus->kled.led.dev) 463 led_classdev_unregister(&asus->kled.led); 464 if (asus->led_workqueue) { 465 destroy_workqueue(asus->led_workqueue); 466 asus->led_workqueue = NULL; 467 } 468} 469 470/* Ugly macro, need to fix that later */ 471static int asus_led_register(struct asus_laptop *asus, 472 struct asus_led *led, 473 const char *name, const char *method) 474{ 475 struct led_classdev *led_cdev = &led->led; 476 477 if (!method || acpi_check_handle(asus->handle, method, NULL)) 478 return 0; /* Led not present */ 479 480 led->asus = asus; 481 led->method = method; 482 483 INIT_WORK(&led->work, asus_led_cdev_update); 484 led_cdev->name = name; 485 led_cdev->brightness_set = asus_led_cdev_set; 486 led_cdev->brightness_get = asus_led_cdev_get; 487 led_cdev->max_brightness = 1; 488 return led_classdev_register(&asus->platform_device->dev, led_cdev); 489} 490 491static int asus_led_init(struct asus_laptop *asus) 492{ 493 int r; 494 495 /* 496 * Functions that actually update the LED's are called from a 497 * workqueue. By doing this as separate work rather than when the LED 498 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 499 * potentially bad time, such as a timer interrupt. 500 */ 501 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 502 if (!asus->led_workqueue) 503 return -ENOMEM; 504 505 r = asus_led_register(asus, &asus->mled, "asus::mail", METHOD_MLED); 506 if (r) 507 goto error; 508 r = asus_led_register(asus, &asus->tled, "asus::touchpad", METHOD_TLED); 509 if (r) 510 goto error; 511 r = asus_led_register(asus, &asus->rled, "asus::record", METHOD_RLED); 512 if (r) 513 goto error; 514 r = asus_led_register(asus, &asus->pled, "asus::phone", METHOD_PLED); 515 if (r) 516 goto error; 517 r = asus_led_register(asus, &asus->gled, "asus::gaming", METHOD_GLED); 518 if (r) 519 goto error; 520 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL) && 521 !acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_GET, NULL)) { 522 struct asus_led *led = &asus->kled; 523 struct led_classdev *cdev = &led->led; 524 525 led->asus = asus; 526 527 INIT_WORK(&led->work, asus_kled_cdev_update); 528 cdev->name = "asus::kbd_backlight"; 529 cdev->brightness_set = asus_kled_cdev_set; 530 cdev->brightness_get = asus_kled_cdev_get; 531 cdev->max_brightness = 3; 532 r = led_classdev_register(&asus->platform_device->dev, cdev); 533 } 534error: 535 if (r) 536 asus_led_exit(asus); 537 return r; 538} 539 540/* 541 * Backlight device 542 */ 543static int asus_lcd_status(struct asus_laptop *asus) 544{ 545 return asus->lcd_state; 546} 547 548static int asus_lcd_set(struct asus_laptop *asus, int value) 549{ 550 int lcd = 0; 551 acpi_status status = 0; 552 553 lcd = !!value; 554 555 if (lcd == asus_lcd_status(asus)) 556 return 0; 557 558 if (!lcd_switch_handle) 559 return -ENODEV; 560 561 status = acpi_evaluate_object(lcd_switch_handle, 562 NULL, NULL, NULL); 563 564 if (ACPI_FAILURE(status)) { 565 pr_warning("Error switching LCD\n"); 566 return -ENODEV; 567 } 568 569 asus->lcd_state = lcd; 570 return 0; 571} 572 573static void lcd_blank(struct asus_laptop *asus, int blank) 574{ 575 struct backlight_device *bd = asus->backlight_device; 576 577 asus->lcd_state = (blank == FB_BLANK_UNBLANK); 578 579 if (bd) { 580 bd->props.power = blank; 581 backlight_update_status(bd); 582 } 583} 584 585static int asus_read_brightness(struct backlight_device *bd) 586{ 587 struct asus_laptop *asus = bl_get_data(bd); 588 unsigned long long value; 589 acpi_status rv = AE_OK; 590 591 rv = acpi_evaluate_integer(asus->handle, METHOD_BRIGHTNESS_GET, 592 NULL, &value); 593 if (ACPI_FAILURE(rv)) 594 pr_warning("Error reading brightness\n"); 595 596 return value; 597} 598 599static int asus_set_brightness(struct backlight_device *bd, int value) 600{ 601 struct asus_laptop *asus = bl_get_data(bd); 602 603 if (write_acpi_int(asus->handle, METHOD_BRIGHTNESS_SET, value)) { 604 pr_warning("Error changing brightness\n"); 605 return -EIO; 606 } 607 return 0; 608} 609 610static int update_bl_status(struct backlight_device *bd) 611{ 612 struct asus_laptop *asus = bl_get_data(bd); 613 int rv; 614 int value = bd->props.brightness; 615 616 rv = asus_set_brightness(bd, value); 617 if (rv) 618 return rv; 619 620 value = (bd->props.power == FB_BLANK_UNBLANK) ? 1 : 0; 621 return asus_lcd_set(asus, value); 622} 623 624static struct backlight_ops asusbl_ops = { 625 .get_brightness = asus_read_brightness, 626 .update_status = update_bl_status, 627}; 628 629static int asus_backlight_notify(struct asus_laptop *asus) 630{ 631 struct backlight_device *bd = asus->backlight_device; 632 int old = bd->props.brightness; 633 634 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 635 636 return old; 637} 638 639static int asus_backlight_init(struct asus_laptop *asus) 640{ 641 struct backlight_device *bd; 642 struct device *dev = &asus->platform_device->dev; 643 struct backlight_properties props; 644 645 if (!acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) && 646 !acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL) && 647 lcd_switch_handle) { 648 memset(&props, 0, sizeof(struct backlight_properties)); 649 props.max_brightness = 15; 650 651 bd = backlight_device_register(ASUS_LAPTOP_FILE, dev, 652 asus, &asusbl_ops, &props); 653 if (IS_ERR(bd)) { 654 pr_err("Could not register asus backlight device\n"); 655 asus->backlight_device = NULL; 656 return PTR_ERR(bd); 657 } 658 659 asus->backlight_device = bd; 660 661 bd->props.power = FB_BLANK_UNBLANK; 662 bd->props.brightness = asus_read_brightness(bd); 663 backlight_update_status(bd); 664 } 665 return 0; 666} 667 668static void asus_backlight_exit(struct asus_laptop *asus) 669{ 670 if (asus->backlight_device) 671 backlight_device_unregister(asus->backlight_device); 672 asus->backlight_device = NULL; 673} 674 675/* 676 * Platform device handlers 677 */ 678 679/* 680 * We write our info in page, we begin at offset off and cannot write more 681 * than count bytes. We set eof to 1 if we handle those 2 values. We return the 682 * number of bytes written in page 683 */ 684static ssize_t show_infos(struct device *dev, 685 struct device_attribute *attr, char *page) 686{ 687 struct asus_laptop *asus = dev_get_drvdata(dev); 688 int len = 0; 689 unsigned long long temp; 690 char buf[16]; /* enough for all info */ 691 acpi_status rv = AE_OK; 692 693 /* 694 * We use the easy way, we don't care of off and count, 695 * so we don't set eof to 1 696 */ 697 698 len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n"); 699 len += sprintf(page + len, "Model reference : %s\n", asus->name); 700 /* 701 * The SFUN method probably allows the original driver to get the list 702 * of features supported by a given model. For now, 0x0100 or 0x0800 703 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 704 * The significance of others is yet to be found. 705 */ 706 rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp); 707 if (!ACPI_FAILURE(rv)) 708 len += sprintf(page + len, "SFUN value : %#x\n", 709 (uint) temp); 710 /* 711 * The HWRS method return informations about the hardware. 712 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 713 * The significance of others is yet to be found. 714 * If we don't find the method, we assume the device are present. 715 */ 716 rv = acpi_evaluate_integer(asus->handle, "HRWS", NULL, &temp); 717 if (!ACPI_FAILURE(rv)) 718 len += sprintf(page + len, "HRWS value : %#x\n", 719 (uint) temp); 720 /* 721 * Another value for userspace: the ASYM method returns 0x02 for 722 * battery low and 0x04 for battery critical, its readings tend to be 723 * more accurate than those provided by _BST. 724 * Note: since not all the laptops provide this method, errors are 725 * silently ignored. 726 */ 727 rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp); 728 if (!ACPI_FAILURE(rv)) 729 len += sprintf(page + len, "ASYM value : %#x\n", 730 (uint) temp); 731 if (asus->dsdt_info) { 732 snprintf(buf, 16, "%d", asus->dsdt_info->length); 733 len += sprintf(page + len, "DSDT length : %s\n", buf); 734 snprintf(buf, 16, "%d", asus->dsdt_info->checksum); 735 len += sprintf(page + len, "DSDT checksum : %s\n", buf); 736 snprintf(buf, 16, "%d", asus->dsdt_info->revision); 737 len += sprintf(page + len, "DSDT revision : %s\n", buf); 738 snprintf(buf, 7, "%s", asus->dsdt_info->oem_id); 739 len += sprintf(page + len, "OEM id : %s\n", buf); 740 snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id); 741 len += sprintf(page + len, "OEM table id : %s\n", buf); 742 snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision); 743 len += sprintf(page + len, "OEM revision : 0x%s\n", buf); 744 snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id); 745 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); 746 snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision); 747 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); 748 } 749 750 return len; 751} 752 753static int parse_arg(const char *buf, unsigned long count, int *val) 754{ 755 if (!count) 756 return 0; 757 if (count > 31) 758 return -EINVAL; 759 if (sscanf(buf, "%i", val) != 1) 760 return -EINVAL; 761 return count; 762} 763 764static ssize_t sysfs_acpi_set(struct asus_laptop *asus, 765 const char *buf, size_t count, 766 const char *method) 767{ 768 int rv, value; 769 int out = 0; 770 771 rv = parse_arg(buf, count, &value); 772 if (rv > 0) 773 out = value ? 1 : 0; 774 775 if (write_acpi_int(asus->handle, method, value)) 776 return -ENODEV; 777 return rv; 778} 779 780/* 781 * LEDD display 782 */ 783static ssize_t show_ledd(struct device *dev, 784 struct device_attribute *attr, char *buf) 785{ 786 struct asus_laptop *asus = dev_get_drvdata(dev); 787 788 return sprintf(buf, "0x%08x\n", asus->ledd_status); 789} 790 791static ssize_t store_ledd(struct device *dev, struct device_attribute *attr, 792 const char *buf, size_t count) 793{ 794 struct asus_laptop *asus = dev_get_drvdata(dev); 795 int rv, value; 796 797 rv = parse_arg(buf, count, &value); 798 if (rv > 0) { 799 if (write_acpi_int(asus->handle, METHOD_LEDD, value)) { 800 pr_warning("LED display write failed\n"); 801 return -ENODEV; 802 } 803 asus->ledd_status = (u32) value; 804 } 805 return rv; 806} 807 808/* 809 * Wireless 810 */ 811static int asus_wireless_status(struct asus_laptop *asus, int mask) 812{ 813 unsigned long long status; 814 acpi_status rv = AE_OK; 815 816 if (!asus->have_rsts) 817 return (asus->wireless_status & mask) ? 1 : 0; 818 819 rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS, 820 NULL, &status); 821 if (ACPI_FAILURE(rv)) { 822 pr_warning("Error reading Wireless status\n"); 823 return -EINVAL; 824 } 825 return !!(status & mask); 826} 827 828/* 829 * WLAN 830 */ 831static int asus_wlan_set(struct asus_laptop *asus, int status) 832{ 833 if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) { 834 pr_warning("Error setting wlan status to %d", status); 835 return -EIO; 836 } 837 return 0; 838} 839 840static ssize_t show_wlan(struct device *dev, 841 struct device_attribute *attr, char *buf) 842{ 843 struct asus_laptop *asus = dev_get_drvdata(dev); 844 845 return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS)); 846} 847 848static ssize_t store_wlan(struct device *dev, struct device_attribute *attr, 849 const char *buf, size_t count) 850{ 851 struct asus_laptop *asus = dev_get_drvdata(dev); 852 853 return sysfs_acpi_set(asus, buf, count, METHOD_WLAN); 854} 855 856/* 857 * Bluetooth 858 */ 859static int asus_bluetooth_set(struct asus_laptop *asus, int status) 860{ 861 if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) { 862 pr_warning("Error setting bluetooth status to %d", status); 863 return -EIO; 864 } 865 return 0; 866} 867 868static ssize_t show_bluetooth(struct device *dev, 869 struct device_attribute *attr, char *buf) 870{ 871 struct asus_laptop *asus = dev_get_drvdata(dev); 872 873 return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS)); 874} 875 876static ssize_t store_bluetooth(struct device *dev, 877 struct device_attribute *attr, const char *buf, 878 size_t count) 879{ 880 struct asus_laptop *asus = dev_get_drvdata(dev); 881 882 return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH); 883} 884 885/* 886 * Display 887 */ 888static void asus_set_display(struct asus_laptop *asus, int value) 889{ 890 /* no sanity check needed for now */ 891 if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value)) 892 pr_warning("Error setting display\n"); 893 return; 894} 895 896static int read_display(struct asus_laptop *asus) 897{ 898 unsigned long long value = 0; 899 acpi_status rv = AE_OK; 900 901 /* 902 * In most of the case, we know how to set the display, but sometime 903 * we can't read it 904 */ 905 if (display_get_handle) { 906 rv = acpi_evaluate_integer(display_get_handle, NULL, 907 NULL, &value); 908 if (ACPI_FAILURE(rv)) 909 pr_warning("Error reading display status\n"); 910 } 911 912 value &= 0x0F; /* needed for some models, shouldn't hurt others */ 913 914 return value; 915} 916 917/* 918 * Now, *this* one could be more user-friendly, but so far, no-one has 919 * complained. The significance of bits is the same as in store_disp() 920 */ 921static ssize_t show_disp(struct device *dev, 922 struct device_attribute *attr, char *buf) 923{ 924 struct asus_laptop *asus = dev_get_drvdata(dev); 925 926 if (!display_get_handle) 927 return -ENODEV; 928 return sprintf(buf, "%d\n", read_display(asus)); 929} 930 931/* 932 * Experimental support for display switching. As of now: 1 should activate 933 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI. 934 * Any combination (bitwise) of these will suffice. I never actually tested 4 935 * displays hooked up simultaneously, so be warned. See the acpi4asus README 936 * for more info. 937 */ 938static ssize_t store_disp(struct device *dev, struct device_attribute *attr, 939 const char *buf, size_t count) 940{ 941 struct asus_laptop *asus = dev_get_drvdata(dev); 942 int rv, value; 943 944 rv = parse_arg(buf, count, &value); 945 if (rv > 0) 946 asus_set_display(asus, value); 947 return rv; 948} 949 950/* 951 * Light Sens 952 */ 953static void asus_als_switch(struct asus_laptop *asus, int value) 954{ 955 if (write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value)) 956 pr_warning("Error setting light sensor switch\n"); 957 asus->light_switch = value; 958} 959 960static ssize_t show_lssw(struct device *dev, 961 struct device_attribute *attr, char *buf) 962{ 963 struct asus_laptop *asus = dev_get_drvdata(dev); 964 965 return sprintf(buf, "%d\n", asus->light_switch); 966} 967 968static ssize_t store_lssw(struct device *dev, struct device_attribute *attr, 969 const char *buf, size_t count) 970{ 971 struct asus_laptop *asus = dev_get_drvdata(dev); 972 int rv, value; 973 974 rv = parse_arg(buf, count, &value); 975 if (rv > 0) 976 asus_als_switch(asus, value ? 1 : 0); 977 978 return rv; 979} 980 981static void asus_als_level(struct asus_laptop *asus, int value) 982{ 983 if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value)) 984 pr_warning("Error setting light sensor level\n"); 985 asus->light_level = value; 986} 987 988static ssize_t show_lslvl(struct device *dev, 989 struct device_attribute *attr, char *buf) 990{ 991 struct asus_laptop *asus = dev_get_drvdata(dev); 992 993 return sprintf(buf, "%d\n", asus->light_level); 994} 995 996static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr, 997 const char *buf, size_t count) 998{ 999 struct asus_laptop *asus = dev_get_drvdata(dev); 1000 int rv, value; 1001 1002 rv = parse_arg(buf, count, &value); 1003 if (rv > 0) { 1004 value = (0 < value) ? ((15 < value) ? 15 : value) : 0; 1005 /* 0 <= value <= 15 */ 1006 asus_als_level(asus, value); 1007 } 1008 1009 return rv; 1010} 1011 1012/* 1013 * GPS 1014 */ 1015static int asus_gps_status(struct asus_laptop *asus) 1016{ 1017 unsigned long long status; 1018 acpi_status rv = AE_OK; 1019 1020 rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS, 1021 NULL, &status); 1022 if (ACPI_FAILURE(rv)) { 1023 pr_warning("Error reading GPS status\n"); 1024 return -ENODEV; 1025 } 1026 return !!status; 1027} 1028 1029static int asus_gps_switch(struct asus_laptop *asus, int status) 1030{ 1031 const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF; 1032 1033 if (write_acpi_int(asus->handle, meth, 0x02)) 1034 return -ENODEV; 1035 return 0; 1036} 1037 1038static ssize_t show_gps(struct device *dev, 1039 struct device_attribute *attr, char *buf) 1040{ 1041 struct asus_laptop *asus = dev_get_drvdata(dev); 1042 1043 return sprintf(buf, "%d\n", asus_gps_status(asus)); 1044} 1045 1046static ssize_t store_gps(struct device *dev, struct device_attribute *attr, 1047 const char *buf, size_t count) 1048{ 1049 struct asus_laptop *asus = dev_get_drvdata(dev); 1050 int rv, value; 1051 int ret; 1052 1053 rv = parse_arg(buf, count, &value); 1054 if (rv <= 0) 1055 return -EINVAL; 1056 ret = asus_gps_switch(asus, !!value); 1057 if (ret) 1058 return ret; 1059 rfkill_set_sw_state(asus->gps_rfkill, !value); 1060 return rv; 1061} 1062 1063/* 1064 * rfkill 1065 */ 1066static int asus_gps_rfkill_set(void *data, bool blocked) 1067{ 1068 struct asus_laptop *asus = data; 1069 1070 return asus_gps_switch(asus, !blocked); 1071} 1072 1073static const struct rfkill_ops asus_gps_rfkill_ops = { 1074 .set_block = asus_gps_rfkill_set, 1075}; 1076 1077static void asus_rfkill_exit(struct asus_laptop *asus) 1078{ 1079 if (asus->gps_rfkill) { 1080 rfkill_unregister(asus->gps_rfkill); 1081 rfkill_destroy(asus->gps_rfkill); 1082 asus->gps_rfkill = NULL; 1083 } 1084} 1085 1086static int asus_rfkill_init(struct asus_laptop *asus) 1087{ 1088 int result; 1089 1090 if (acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) || 1091 acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) || 1092 acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL)) 1093 return 0; 1094 1095 asus->gps_rfkill = rfkill_alloc("asus-gps", &asus->platform_device->dev, 1096 RFKILL_TYPE_GPS, 1097 &asus_gps_rfkill_ops, asus); 1098 if (!asus->gps_rfkill) 1099 return -EINVAL; 1100 1101 result = rfkill_register(asus->gps_rfkill); 1102 if (result) { 1103 rfkill_destroy(asus->gps_rfkill); 1104 asus->gps_rfkill = NULL; 1105 } 1106 1107 return result; 1108} 1109 1110/* 1111 * Input device (i.e. hotkeys) 1112 */ 1113static void asus_input_notify(struct asus_laptop *asus, int event) 1114{ 1115 if (asus->inputdev) 1116 sparse_keymap_report_event(asus->inputdev, event, 1, true); 1117} 1118 1119static int asus_input_init(struct asus_laptop *asus) 1120{ 1121 struct input_dev *input; 1122 int error; 1123 1124 input = input_allocate_device(); 1125 if (!input) { 1126 pr_info("Unable to allocate input device\n"); 1127 return -ENOMEM; 1128 } 1129 input->name = "Asus Laptop extra buttons"; 1130 input->phys = ASUS_LAPTOP_FILE "/input0"; 1131 input->id.bustype = BUS_HOST; 1132 input->dev.parent = &asus->platform_device->dev; 1133 input_set_drvdata(input, asus); 1134 1135 error = sparse_keymap_setup(input, asus_keymap, NULL); 1136 if (error) { 1137 pr_err("Unable to setup input device keymap\n"); 1138 goto err_free_dev; 1139 } 1140 error = input_register_device(input); 1141 if (error) { 1142 pr_info("Unable to register input device\n"); 1143 goto err_free_keymap; 1144 } 1145 1146 asus->inputdev = input; 1147 return 0; 1148 1149err_free_keymap: 1150 sparse_keymap_free(input); 1151err_free_dev: 1152 input_free_device(input); 1153 return error; 1154} 1155 1156static void asus_input_exit(struct asus_laptop *asus) 1157{ 1158 if (asus->inputdev) { 1159 sparse_keymap_free(asus->inputdev); 1160 input_unregister_device(asus->inputdev); 1161 } 1162} 1163 1164/* 1165 * ACPI driver 1166 */ 1167static void asus_acpi_notify(struct acpi_device *device, u32 event) 1168{ 1169 struct asus_laptop *asus = acpi_driver_data(device); 1170 u16 count; 1171 1172 /* 1173 * We need to tell the backlight device when the backlight power is 1174 * switched 1175 */ 1176 if (event == ATKD_LCD_ON) 1177 lcd_blank(asus, FB_BLANK_UNBLANK); 1178 else if (event == ATKD_LCD_OFF) 1179 lcd_blank(asus, FB_BLANK_POWERDOWN); 1180 1181 /* TODO Find a better way to handle events count. */ 1182 count = asus->event_count[event % 128]++; 1183 acpi_bus_generate_proc_event(asus->device, event, count); 1184 acpi_bus_generate_netlink_event(asus->device->pnp.device_class, 1185 dev_name(&asus->device->dev), event, 1186 count); 1187 1188 /* Brightness events are special */ 1189 if (event >= ATKD_BR_MIN && event <= ATKD_BR_MAX) { 1190 1191 /* Ignore them completely if the acpi video driver is used */ 1192 if (asus->backlight_device != NULL) { 1193 /* Update the backlight device. */ 1194 asus_backlight_notify(asus); 1195 } 1196 return ; 1197 } 1198 asus_input_notify(asus, event); 1199} 1200 1201static DEVICE_ATTR(infos, S_IRUGO, show_infos, NULL); 1202static DEVICE_ATTR(wlan, S_IRUGO | S_IWUSR, show_wlan, store_wlan); 1203static DEVICE_ATTR(bluetooth, S_IRUGO | S_IWUSR, show_bluetooth, 1204 store_bluetooth); 1205static DEVICE_ATTR(display, S_IRUGO | S_IWUSR, show_disp, store_disp); 1206static DEVICE_ATTR(ledd, S_IRUGO | S_IWUSR, show_ledd, store_ledd); 1207static DEVICE_ATTR(ls_level, S_IRUGO | S_IWUSR, show_lslvl, store_lslvl); 1208static DEVICE_ATTR(ls_switch, S_IRUGO | S_IWUSR, show_lssw, store_lssw); 1209static DEVICE_ATTR(gps, S_IRUGO | S_IWUSR, show_gps, store_gps); 1210 1211static void asus_sysfs_exit(struct asus_laptop *asus) 1212{ 1213 struct platform_device *device = asus->platform_device; 1214 1215 device_remove_file(&device->dev, &dev_attr_infos); 1216 device_remove_file(&device->dev, &dev_attr_wlan); 1217 device_remove_file(&device->dev, &dev_attr_bluetooth); 1218 device_remove_file(&device->dev, &dev_attr_display); 1219 device_remove_file(&device->dev, &dev_attr_ledd); 1220 device_remove_file(&device->dev, &dev_attr_ls_switch); 1221 device_remove_file(&device->dev, &dev_attr_ls_level); 1222 device_remove_file(&device->dev, &dev_attr_gps); 1223} 1224 1225static int asus_sysfs_init(struct asus_laptop *asus) 1226{ 1227 struct platform_device *device = asus->platform_device; 1228 int err; 1229 1230 err = device_create_file(&device->dev, &dev_attr_infos); 1231 if (err) 1232 return err; 1233 1234 if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL)) { 1235 err = device_create_file(&device->dev, &dev_attr_wlan); 1236 if (err) 1237 return err; 1238 } 1239 1240 if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL)) { 1241 err = device_create_file(&device->dev, &dev_attr_bluetooth); 1242 if (err) 1243 return err; 1244 } 1245 1246 if (!acpi_check_handle(asus->handle, METHOD_SWITCH_DISPLAY, NULL)) { 1247 err = device_create_file(&device->dev, &dev_attr_display); 1248 if (err) 1249 return err; 1250 } 1251 1252 if (!acpi_check_handle(asus->handle, METHOD_LEDD, NULL)) { 1253 err = device_create_file(&device->dev, &dev_attr_ledd); 1254 if (err) 1255 return err; 1256 } 1257 1258 if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) && 1259 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) { 1260 err = device_create_file(&device->dev, &dev_attr_ls_switch); 1261 if (err) 1262 return err; 1263 err = device_create_file(&device->dev, &dev_attr_ls_level); 1264 if (err) 1265 return err; 1266 } 1267 1268 if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) && 1269 !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) && 1270 !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL)) { 1271 err = device_create_file(&device->dev, &dev_attr_gps); 1272 if (err) 1273 return err; 1274 } 1275 1276 return err; 1277} 1278 1279static int asus_platform_init(struct asus_laptop *asus) 1280{ 1281 int err; 1282 1283 asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1); 1284 if (!asus->platform_device) 1285 return -ENOMEM; 1286 platform_set_drvdata(asus->platform_device, asus); 1287 1288 err = platform_device_add(asus->platform_device); 1289 if (err) 1290 goto fail_platform_device; 1291 1292 err = asus_sysfs_init(asus); 1293 if (err) 1294 goto fail_sysfs; 1295 return 0; 1296 1297fail_sysfs: 1298 asus_sysfs_exit(asus); 1299 platform_device_del(asus->platform_device); 1300fail_platform_device: 1301 platform_device_put(asus->platform_device); 1302 return err; 1303} 1304 1305static void asus_platform_exit(struct asus_laptop *asus) 1306{ 1307 asus_sysfs_exit(asus); 1308 platform_device_unregister(asus->platform_device); 1309} 1310 1311static struct platform_driver platform_driver = { 1312 .driver = { 1313 .name = ASUS_LAPTOP_FILE, 1314 .owner = THIS_MODULE, 1315 } 1316}; 1317 1318static int asus_handle_init(char *name, acpi_handle * handle, 1319 char **paths, int num_paths) 1320{ 1321 int i; 1322 acpi_status status; 1323 1324 for (i = 0; i < num_paths; i++) { 1325 status = acpi_get_handle(NULL, paths[i], handle); 1326 if (ACPI_SUCCESS(status)) 1327 return 0; 1328 } 1329 1330 *handle = NULL; 1331 return -ENODEV; 1332} 1333 1334#define ASUS_HANDLE_INIT(object) \ 1335 asus_handle_init(#object, &object##_handle, object##_paths, \ 1336 ARRAY_SIZE(object##_paths)) 1337 1338/* 1339 * This function is used to initialize the context with right values. In this 1340 * method, we can make all the detection we want, and modify the asus_laptop 1341 * struct 1342 */ 1343static int asus_laptop_get_info(struct asus_laptop *asus) 1344{ 1345 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 1346 union acpi_object *model = NULL; 1347 unsigned long long bsts_result, hwrs_result; 1348 char *string = NULL; 1349 acpi_status status; 1350 1351 /* 1352 * Get DSDT headers early enough to allow for differentiating between 1353 * models, but late enough to allow acpi_bus_register_driver() to fail 1354 * before doing anything ACPI-specific. Should we encounter a machine, 1355 * which needs special handling (i.e. its hotkey device has a different 1356 * HID), this bit will be moved. 1357 */ 1358 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info); 1359 if (ACPI_FAILURE(status)) 1360 pr_warning("Couldn't get the DSDT table header\n"); 1361 1362 /* We have to write 0 on init this far for all ASUS models */ 1363 if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) { 1364 pr_err("Hotkey initialization failed\n"); 1365 return -ENODEV; 1366 } 1367 1368 /* This needs to be called for some laptops to init properly */ 1369 status = 1370 acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result); 1371 if (ACPI_FAILURE(status)) 1372 pr_warning("Error calling BSTS\n"); 1373 else if (bsts_result) 1374 pr_notice("BSTS called, 0x%02x returned\n", 1375 (uint) bsts_result); 1376 1377 /* This too ... */ 1378 if (write_acpi_int(asus->handle, "CWAP", wapf)) 1379 pr_err("Error calling CWAP(%d)\n", wapf); 1380 /* 1381 * Try to match the object returned by INIT to the specific model. 1382 * Handle every possible object (or the lack of thereof) the DSDT 1383 * writers might throw at us. When in trouble, we pass NULL to 1384 * asus_model_match() and try something completely different. 1385 */ 1386 if (buffer.pointer) { 1387 model = buffer.pointer; 1388 switch (model->type) { 1389 case ACPI_TYPE_STRING: 1390 string = model->string.pointer; 1391 break; 1392 case ACPI_TYPE_BUFFER: 1393 string = model->buffer.pointer; 1394 break; 1395 default: 1396 string = ""; 1397 break; 1398 } 1399 } 1400 asus->name = kstrdup(string, GFP_KERNEL); 1401 if (!asus->name) { 1402 kfree(buffer.pointer); 1403 return -ENOMEM; 1404 } 1405 1406 if (*string) 1407 pr_notice(" %s model detected\n", string); 1408 1409 /* 1410 * The HWRS method return informations about the hardware. 1411 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 1412 * The significance of others is yet to be found. 1413 */ 1414 status = 1415 acpi_evaluate_integer(asus->handle, "HRWS", NULL, &hwrs_result); 1416 if (!ACPI_FAILURE(status)) 1417 pr_notice(" HRWS returned %x", (int)hwrs_result); 1418 1419 if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL)) 1420 asus->have_rsts = true; 1421 1422 /* Scheduled for removal */ 1423 ASUS_HANDLE_INIT(lcd_switch); 1424 ASUS_HANDLE_INIT(display_get); 1425 1426 kfree(model); 1427 1428 return AE_OK; 1429} 1430 1431static bool asus_device_present; 1432 1433static int __devinit asus_acpi_init(struct asus_laptop *asus) 1434{ 1435 int result = 0; 1436 1437 result = acpi_bus_get_status(asus->device); 1438 if (result) 1439 return result; 1440 if (!asus->device->status.present) { 1441 pr_err("Hotkey device not present, aborting\n"); 1442 return -ENODEV; 1443 } 1444 1445 result = asus_laptop_get_info(asus); 1446 if (result) 1447 return result; 1448 1449 /* WLED and BLED are on by default */ 1450 if (bluetooth_status >= 0) 1451 asus_bluetooth_set(asus, !!bluetooth_status); 1452 1453 if (wlan_status >= 0) 1454 asus_wlan_set(asus, !!wlan_status); 1455 1456 /* Keyboard Backlight is on by default */ 1457 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL)) 1458 asus_kled_set(asus, 1); 1459 1460 /* LED display is off by default */ 1461 asus->ledd_status = 0xFFF; 1462 1463 /* Set initial values of light sensor and level */ 1464 asus->light_switch = 0; /* Default to light sensor disabled */ 1465 asus->light_level = 5; /* level 5 for sensor sensitivity */ 1466 1467 if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) && 1468 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) { 1469 asus_als_switch(asus, asus->light_switch); 1470 asus_als_level(asus, asus->light_level); 1471 } 1472 1473 asus->lcd_state = 1; /* LCD should be on when the module load */ 1474 return result; 1475} 1476 1477static int __devinit asus_acpi_add(struct acpi_device *device) 1478{ 1479 struct asus_laptop *asus; 1480 int result; 1481 1482 pr_notice("Asus Laptop Support version %s\n", 1483 ASUS_LAPTOP_VERSION); 1484 asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL); 1485 if (!asus) 1486 return -ENOMEM; 1487 asus->handle = device->handle; 1488 strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME); 1489 strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS); 1490 device->driver_data = asus; 1491 asus->device = device; 1492 1493 result = asus_acpi_init(asus); 1494 if (result) 1495 goto fail_platform; 1496 1497 /* 1498 * Register the platform device first. It is used as a parent for the 1499 * sub-devices below. 1500 */ 1501 result = asus_platform_init(asus); 1502 if (result) 1503 goto fail_platform; 1504 1505 if (!acpi_video_backlight_support()) { 1506 result = asus_backlight_init(asus); 1507 if (result) 1508 goto fail_backlight; 1509 } else 1510 pr_info("Backlight controlled by ACPI video driver\n"); 1511 1512 result = asus_input_init(asus); 1513 if (result) 1514 goto fail_input; 1515 1516 result = asus_led_init(asus); 1517 if (result) 1518 goto fail_led; 1519 1520 result = asus_rfkill_init(asus); 1521 if (result) 1522 goto fail_rfkill; 1523 1524 asus_device_present = true; 1525 return 0; 1526 1527fail_rfkill: 1528 asus_led_exit(asus); 1529fail_led: 1530 asus_input_exit(asus); 1531fail_input: 1532 asus_backlight_exit(asus); 1533fail_backlight: 1534 asus_platform_exit(asus); 1535fail_platform: 1536 kfree(asus->name); 1537 kfree(asus); 1538 1539 return result; 1540} 1541 1542static int asus_acpi_remove(struct acpi_device *device, int type) 1543{ 1544 struct asus_laptop *asus = acpi_driver_data(device); 1545 1546 asus_backlight_exit(asus); 1547 asus_rfkill_exit(asus); 1548 asus_led_exit(asus); 1549 asus_input_exit(asus); 1550 asus_platform_exit(asus); 1551 1552 kfree(asus->name); 1553 kfree(asus); 1554 return 0; 1555} 1556 1557static const struct acpi_device_id asus_device_ids[] = { 1558 {"ATK0100", 0}, 1559 {"ATK0101", 0}, 1560 {"", 0}, 1561}; 1562MODULE_DEVICE_TABLE(acpi, asus_device_ids); 1563 1564static struct acpi_driver asus_acpi_driver = { 1565 .name = ASUS_LAPTOP_NAME, 1566 .class = ASUS_LAPTOP_CLASS, 1567 .owner = THIS_MODULE, 1568 .ids = asus_device_ids, 1569 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, 1570 .ops = { 1571 .add = asus_acpi_add, 1572 .remove = asus_acpi_remove, 1573 .notify = asus_acpi_notify, 1574 }, 1575}; 1576 1577static int __init asus_laptop_init(void) 1578{ 1579 int result; 1580 1581 result = platform_driver_register(&platform_driver); 1582 if (result < 0) 1583 return result; 1584 1585 result = acpi_bus_register_driver(&asus_acpi_driver); 1586 if (result < 0) 1587 goto fail_acpi_driver; 1588 if (!asus_device_present) { 1589 result = -ENODEV; 1590 goto fail_no_device; 1591 } 1592 return 0; 1593 1594fail_no_device: 1595 acpi_bus_unregister_driver(&asus_acpi_driver); 1596fail_acpi_driver: 1597 platform_driver_unregister(&platform_driver); 1598 return result; 1599} 1600 1601static void __exit asus_laptop_exit(void) 1602{ 1603 acpi_bus_unregister_driver(&asus_acpi_driver); 1604 platform_driver_unregister(&platform_driver); 1605} 1606 1607module_init(asus_laptop_init); 1608module_exit(asus_laptop_exit); 1609