asus-laptop.c revision 167215118a88dd56a1ab8c8d33e279d6d40f57b6
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 <acpi/acpi_drivers.h> 53#include <acpi/acpi_bus.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/* LED */ 118#define METHOD_MLED "MLED" 119#define METHOD_TLED "TLED" 120#define METHOD_RLED "RLED" /* W1JC */ 121#define METHOD_PLED "PLED" /* A7J */ 122#define METHOD_GLED "GLED" /* G1, G2 (probably) */ 123 124/* LEDD */ 125#define METHOD_LEDD "SLCM" 126 127/* 128 * Bluetooth and WLAN 129 * WLED and BLED are not handled like other XLED, because in some dsdt 130 * they also control the WLAN/Bluetooth device. 131 */ 132#define METHOD_WLAN "WLED" 133#define METHOD_BLUETOOTH "BLED" 134#define METHOD_WL_STATUS "RSTS" 135 136/* Brightness */ 137#define METHOD_BRIGHTNESS_SET "SPLV" 138#define METHOD_BRIGHTNESS_GET "GPLV" 139 140/* Backlight */ 141static acpi_handle lcd_switch_handle; 142static char *lcd_switch_paths[] = { 143 "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */ 144 "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */ 145 "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */ 146 "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */ 147 "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */ 148 "\\_SB.PCI0.LPCB.EC0._Q0E", /* P30/P35 */ 149 "\\_SB.PCI0.PX40.Q10", /* S1x */ 150 "\\Q10"}; /* A2x, L2D, L3D, M2E */ 151 152/* Display */ 153#define METHOD_SWITCH_DISPLAY "SDSP" 154 155static acpi_handle display_get_handle; 156static char *display_get_paths[] = { 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 struct backlight_properties props; 643 644 if (!acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) && 645 !acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL) && 646 lcd_switch_handle) { 647 memset(&props, 0, sizeof(struct backlight_properties)); 648 props.max_brightness = 15; 649 650 bd = backlight_device_register(ASUS_LAPTOP_FILE, dev, 651 asus, &asusbl_ops, &props); 652 if (IS_ERR(bd)) { 653 pr_err("Could not register asus backlight device\n"); 654 asus->backlight_device = NULL; 655 return PTR_ERR(bd); 656 } 657 658 asus->backlight_device = bd; 659 660 bd->props.power = FB_BLANK_UNBLANK; 661 bd->props.brightness = asus_read_brightness(bd); 662 backlight_update_status(bd); 663 } 664 return 0; 665} 666 667static void asus_backlight_exit(struct asus_laptop *asus) 668{ 669 if (asus->backlight_device) 670 backlight_device_unregister(asus->backlight_device); 671 asus->backlight_device = NULL; 672} 673 674/* 675 * Platform device handlers 676 */ 677 678/* 679 * We write our info in page, we begin at offset off and cannot write more 680 * than count bytes. We set eof to 1 if we handle those 2 values. We return the 681 * number of bytes written in page 682 */ 683static ssize_t show_infos(struct device *dev, 684 struct device_attribute *attr, char *page) 685{ 686 struct asus_laptop *asus = dev_get_drvdata(dev); 687 int len = 0; 688 unsigned long long temp; 689 char buf[16]; /* enough for all info */ 690 acpi_status rv = AE_OK; 691 692 /* 693 * We use the easy way, we don't care of off and count, 694 * so we don't set eof to 1 695 */ 696 697 len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n"); 698 len += sprintf(page + len, "Model reference : %s\n", asus->name); 699 /* 700 * The SFUN method probably allows the original driver to get the list 701 * of features supported by a given model. For now, 0x0100 or 0x0800 702 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 703 * The significance of others is yet to be found. 704 */ 705 rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp); 706 if (!ACPI_FAILURE(rv)) 707 len += sprintf(page + len, "SFUN value : %#x\n", 708 (uint) temp); 709 /* 710 * The HWRS method return informations about the hardware. 711 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 712 * The significance of others is yet to be found. 713 * If we don't find the method, we assume the device are present. 714 */ 715 rv = acpi_evaluate_integer(asus->handle, "HRWS", NULL, &temp); 716 if (!ACPI_FAILURE(rv)) 717 len += sprintf(page + len, "HRWS value : %#x\n", 718 (uint) temp); 719 /* 720 * Another value for userspace: the ASYM method returns 0x02 for 721 * battery low and 0x04 for battery critical, its readings tend to be 722 * more accurate than those provided by _BST. 723 * Note: since not all the laptops provide this method, errors are 724 * silently ignored. 725 */ 726 rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp); 727 if (!ACPI_FAILURE(rv)) 728 len += sprintf(page + len, "ASYM value : %#x\n", 729 (uint) temp); 730 if (asus->dsdt_info) { 731 snprintf(buf, 16, "%d", asus->dsdt_info->length); 732 len += sprintf(page + len, "DSDT length : %s\n", buf); 733 snprintf(buf, 16, "%d", asus->dsdt_info->checksum); 734 len += sprintf(page + len, "DSDT checksum : %s\n", buf); 735 snprintf(buf, 16, "%d", asus->dsdt_info->revision); 736 len += sprintf(page + len, "DSDT revision : %s\n", buf); 737 snprintf(buf, 7, "%s", asus->dsdt_info->oem_id); 738 len += sprintf(page + len, "OEM id : %s\n", buf); 739 snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id); 740 len += sprintf(page + len, "OEM table id : %s\n", buf); 741 snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision); 742 len += sprintf(page + len, "OEM revision : 0x%s\n", buf); 743 snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id); 744 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); 745 snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision); 746 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); 747 } 748 749 return len; 750} 751 752static int parse_arg(const char *buf, unsigned long count, int *val) 753{ 754 if (!count) 755 return 0; 756 if (count > 31) 757 return -EINVAL; 758 if (sscanf(buf, "%i", val) != 1) 759 return -EINVAL; 760 return count; 761} 762 763static ssize_t sysfs_acpi_set(struct asus_laptop *asus, 764 const char *buf, size_t count, 765 const char *method) 766{ 767 int rv, value; 768 int out = 0; 769 770 rv = parse_arg(buf, count, &value); 771 if (rv > 0) 772 out = value ? 1 : 0; 773 774 if (write_acpi_int(asus->handle, method, value)) 775 return -ENODEV; 776 return rv; 777} 778 779/* 780 * LEDD display 781 */ 782static ssize_t show_ledd(struct device *dev, 783 struct device_attribute *attr, char *buf) 784{ 785 struct asus_laptop *asus = dev_get_drvdata(dev); 786 787 return sprintf(buf, "0x%08x\n", asus->ledd_status); 788} 789 790static ssize_t store_ledd(struct device *dev, struct device_attribute *attr, 791 const char *buf, size_t count) 792{ 793 struct asus_laptop *asus = dev_get_drvdata(dev); 794 int rv, value; 795 796 rv = parse_arg(buf, count, &value); 797 if (rv > 0) { 798 if (write_acpi_int(asus->handle, METHOD_LEDD, value)) 799 pr_warning("LED display write failed\n"); 800 else 801 asus->ledd_status = (u32) value; 802 } 803 return rv; 804} 805 806/* 807 * Wireless 808 */ 809static int asus_wireless_status(struct asus_laptop *asus, int mask) 810{ 811 unsigned long long status; 812 acpi_status rv = AE_OK; 813 814 if (!asus->have_rsts) 815 return (asus->wireless_status & mask) ? 1 : 0; 816 817 rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS, 818 NULL, &status); 819 if (ACPI_FAILURE(rv)) { 820 pr_warning("Error reading Wireless status\n"); 821 return -EINVAL; 822 } 823 return !!(status & mask); 824} 825 826/* 827 * WLAN 828 */ 829static int asus_wlan_set(struct asus_laptop *asus, int status) 830{ 831 if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) { 832 pr_warning("Error setting wlan status to %d", status); 833 return -EIO; 834 } 835 return 0; 836} 837 838static ssize_t show_wlan(struct device *dev, 839 struct device_attribute *attr, char *buf) 840{ 841 struct asus_laptop *asus = dev_get_drvdata(dev); 842 843 return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS)); 844} 845 846static ssize_t store_wlan(struct device *dev, struct device_attribute *attr, 847 const char *buf, size_t count) 848{ 849 struct asus_laptop *asus = dev_get_drvdata(dev); 850 851 return sysfs_acpi_set(asus, buf, count, METHOD_WLAN); 852} 853 854/* 855 * Bluetooth 856 */ 857static int asus_bluetooth_set(struct asus_laptop *asus, int status) 858{ 859 if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) { 860 pr_warning("Error setting bluetooth status to %d", status); 861 return -EIO; 862 } 863 return 0; 864} 865 866static ssize_t show_bluetooth(struct device *dev, 867 struct device_attribute *attr, char *buf) 868{ 869 struct asus_laptop *asus = dev_get_drvdata(dev); 870 871 return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS)); 872} 873 874static ssize_t store_bluetooth(struct device *dev, 875 struct device_attribute *attr, const char *buf, 876 size_t count) 877{ 878 struct asus_laptop *asus = dev_get_drvdata(dev); 879 880 return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH); 881} 882 883/* 884 * Display 885 */ 886static void asus_set_display(struct asus_laptop *asus, int value) 887{ 888 /* no sanity check needed for now */ 889 if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value)) 890 pr_warning("Error setting display\n"); 891 return; 892} 893 894static int read_display(struct asus_laptop *asus) 895{ 896 unsigned long long value = 0; 897 acpi_status rv = AE_OK; 898 899 /* 900 * In most of the case, we know how to set the display, but sometime 901 * we can't read it 902 */ 903 if (display_get_handle) { 904 rv = acpi_evaluate_integer(display_get_handle, NULL, 905 NULL, &value); 906 if (ACPI_FAILURE(rv)) 907 pr_warning("Error reading display status\n"); 908 } 909 910 value &= 0x0F; /* needed for some models, shouldn't hurt others */ 911 912 return value; 913} 914 915/* 916 * Now, *this* one could be more user-friendly, but so far, no-one has 917 * complained. The significance of bits is the same as in store_disp() 918 */ 919static ssize_t show_disp(struct device *dev, 920 struct device_attribute *attr, char *buf) 921{ 922 struct asus_laptop *asus = dev_get_drvdata(dev); 923 924 if (!display_get_handle) 925 return -ENODEV; 926 return sprintf(buf, "%d\n", read_display(asus)); 927} 928 929/* 930 * Experimental support for display switching. As of now: 1 should activate 931 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI. 932 * Any combination (bitwise) of these will suffice. I never actually tested 4 933 * displays hooked up simultaneously, so be warned. See the acpi4asus README 934 * for more info. 935 */ 936static ssize_t store_disp(struct device *dev, struct device_attribute *attr, 937 const char *buf, size_t count) 938{ 939 struct asus_laptop *asus = dev_get_drvdata(dev); 940 int rv, value; 941 942 rv = parse_arg(buf, count, &value); 943 if (rv > 0) 944 asus_set_display(asus, value); 945 return rv; 946} 947 948/* 949 * Light Sens 950 */ 951static void asus_als_switch(struct asus_laptop *asus, int value) 952{ 953 if (write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value)) 954 pr_warning("Error setting light sensor switch\n"); 955 asus->light_switch = value; 956} 957 958static ssize_t show_lssw(struct device *dev, 959 struct device_attribute *attr, char *buf) 960{ 961 struct asus_laptop *asus = dev_get_drvdata(dev); 962 963 return sprintf(buf, "%d\n", asus->light_switch); 964} 965 966static ssize_t store_lssw(struct device *dev, struct device_attribute *attr, 967 const char *buf, size_t count) 968{ 969 struct asus_laptop *asus = dev_get_drvdata(dev); 970 int rv, value; 971 972 rv = parse_arg(buf, count, &value); 973 if (rv > 0) 974 asus_als_switch(asus, value ? 1 : 0); 975 976 return rv; 977} 978 979static void asus_als_level(struct asus_laptop *asus, int value) 980{ 981 if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value)) 982 pr_warning("Error setting light sensor level\n"); 983 asus->light_level = value; 984} 985 986static ssize_t show_lslvl(struct device *dev, 987 struct device_attribute *attr, char *buf) 988{ 989 struct asus_laptop *asus = dev_get_drvdata(dev); 990 991 return sprintf(buf, "%d\n", asus->light_level); 992} 993 994static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr, 995 const char *buf, size_t count) 996{ 997 struct asus_laptop *asus = dev_get_drvdata(dev); 998 int rv, value; 999 1000 rv = parse_arg(buf, count, &value); 1001 if (rv > 0) { 1002 value = (0 < value) ? ((15 < value) ? 15 : value) : 0; 1003 /* 0 <= value <= 15 */ 1004 asus_als_level(asus, value); 1005 } 1006 1007 return rv; 1008} 1009 1010/* 1011 * GPS 1012 */ 1013static int asus_gps_status(struct asus_laptop *asus) 1014{ 1015 unsigned long long status; 1016 acpi_status rv = AE_OK; 1017 1018 rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS, 1019 NULL, &status); 1020 if (ACPI_FAILURE(rv)) { 1021 pr_warning("Error reading GPS status\n"); 1022 return -ENODEV; 1023 } 1024 return !!status; 1025} 1026 1027static int asus_gps_switch(struct asus_laptop *asus, int status) 1028{ 1029 const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF; 1030 1031 if (write_acpi_int(asus->handle, meth, 0x02)) 1032 return -ENODEV; 1033 return 0; 1034} 1035 1036static ssize_t show_gps(struct device *dev, 1037 struct device_attribute *attr, char *buf) 1038{ 1039 struct asus_laptop *asus = dev_get_drvdata(dev); 1040 1041 return sprintf(buf, "%d\n", asus_gps_status(asus)); 1042} 1043 1044static ssize_t store_gps(struct device *dev, struct device_attribute *attr, 1045 const char *buf, size_t count) 1046{ 1047 struct asus_laptop *asus = dev_get_drvdata(dev); 1048 int rv, value; 1049 int ret; 1050 1051 rv = parse_arg(buf, count, &value); 1052 if (rv <= 0) 1053 return -EINVAL; 1054 ret = asus_gps_switch(asus, !!value); 1055 if (ret) 1056 return ret; 1057 rfkill_set_sw_state(asus->gps_rfkill, !value); 1058 return rv; 1059} 1060 1061/* 1062 * rfkill 1063 */ 1064static int asus_gps_rfkill_set(void *data, bool blocked) 1065{ 1066 acpi_handle handle = data; 1067 1068 return asus_gps_switch(handle, !blocked); 1069} 1070 1071static const struct rfkill_ops asus_gps_rfkill_ops = { 1072 .set_block = asus_gps_rfkill_set, 1073}; 1074 1075static void asus_rfkill_exit(struct asus_laptop *asus) 1076{ 1077 if (asus->gps_rfkill) { 1078 rfkill_unregister(asus->gps_rfkill); 1079 rfkill_destroy(asus->gps_rfkill); 1080 asus->gps_rfkill = NULL; 1081 } 1082} 1083 1084static int asus_rfkill_init(struct asus_laptop *asus) 1085{ 1086 int result; 1087 1088 if (acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) || 1089 acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) || 1090 acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL)) 1091 return 0; 1092 1093 asus->gps_rfkill = rfkill_alloc("asus-gps", &asus->platform_device->dev, 1094 RFKILL_TYPE_GPS, 1095 &asus_gps_rfkill_ops, NULL); 1096 if (!asus->gps_rfkill) 1097 return -EINVAL; 1098 1099 result = rfkill_register(asus->gps_rfkill); 1100 if (result) { 1101 rfkill_destroy(asus->gps_rfkill); 1102 asus->gps_rfkill = NULL; 1103 } 1104 1105 return result; 1106} 1107 1108/* 1109 * Input device (i.e. hotkeys) 1110 */ 1111static void asus_input_notify(struct asus_laptop *asus, int event) 1112{ 1113 if (asus->inputdev) 1114 sparse_keymap_report_event(asus->inputdev, event, 1, true); 1115} 1116 1117static int asus_input_init(struct asus_laptop *asus) 1118{ 1119 struct input_dev *input; 1120 int error; 1121 1122 input = input_allocate_device(); 1123 if (!input) { 1124 pr_info("Unable to allocate input device\n"); 1125 return 0; 1126 } 1127 input->name = "Asus Laptop extra buttons"; 1128 input->phys = ASUS_LAPTOP_FILE "/input0"; 1129 input->id.bustype = BUS_HOST; 1130 input->dev.parent = &asus->platform_device->dev; 1131 input_set_drvdata(input, asus); 1132 1133 error = sparse_keymap_setup(input, asus_keymap, NULL); 1134 if (error) { 1135 pr_err("Unable to setup input device keymap\n"); 1136 goto err_keymap; 1137 } 1138 error = input_register_device(input); 1139 if (error) { 1140 pr_info("Unable to register input device\n"); 1141 goto err_device; 1142 } 1143 1144 asus->inputdev = input; 1145 return 0; 1146 1147err_keymap: 1148 sparse_keymap_free(input); 1149err_device: 1150 input_free_device(input); 1151 return error; 1152} 1153 1154static void asus_input_exit(struct asus_laptop *asus) 1155{ 1156 if (asus->inputdev) { 1157 sparse_keymap_free(asus->inputdev); 1158 input_unregister_device(asus->inputdev); 1159 } 1160} 1161 1162/* 1163 * ACPI driver 1164 */ 1165static void asus_acpi_notify(struct acpi_device *device, u32 event) 1166{ 1167 struct asus_laptop *asus = acpi_driver_data(device); 1168 u16 count; 1169 1170 /* 1171 * We need to tell the backlight device when the backlight power is 1172 * switched 1173 */ 1174 if (event == ATKD_LCD_ON) 1175 lcd_blank(asus, FB_BLANK_UNBLANK); 1176 else if (event == ATKD_LCD_OFF) 1177 lcd_blank(asus, FB_BLANK_POWERDOWN); 1178 1179 /* TODO Find a better way to handle events count. */ 1180 count = asus->event_count[event % 128]++; 1181 acpi_bus_generate_proc_event(asus->device, event, count); 1182 acpi_bus_generate_netlink_event(asus->device->pnp.device_class, 1183 dev_name(&asus->device->dev), event, 1184 count); 1185 1186 /* Brightness events are special */ 1187 if (event >= ATKD_BR_MIN && event <= ATKD_BR_MAX) { 1188 1189 /* Ignore them completely if the acpi video driver is used */ 1190 if (asus->backlight_device != NULL) { 1191 /* Update the backlight device. */ 1192 asus_backlight_notify(asus); 1193 } 1194 return ; 1195 } 1196 asus_input_notify(asus, event); 1197} 1198 1199static DEVICE_ATTR(infos, S_IRUGO, show_infos, NULL); 1200static DEVICE_ATTR(wlan, S_IRUGO | S_IWUSR, show_wlan, store_wlan); 1201static DEVICE_ATTR(bluetooth, S_IRUGO | S_IWUSR, show_bluetooth, 1202 store_bluetooth); 1203static DEVICE_ATTR(display, S_IRUGO | S_IWUSR, show_disp, store_disp); 1204static DEVICE_ATTR(ledd, S_IRUGO | S_IWUSR, show_ledd, store_ledd); 1205static DEVICE_ATTR(ls_level, S_IRUGO | S_IWUSR, show_lslvl, store_lslvl); 1206static DEVICE_ATTR(ls_switch, S_IRUGO | S_IWUSR, show_lssw, store_lssw); 1207static DEVICE_ATTR(gps, S_IRUGO | S_IWUSR, show_gps, store_gps); 1208 1209static void asus_sysfs_exit(struct asus_laptop *asus) 1210{ 1211 struct platform_device *device = asus->platform_device; 1212 1213 device_remove_file(&device->dev, &dev_attr_infos); 1214 device_remove_file(&device->dev, &dev_attr_wlan); 1215 device_remove_file(&device->dev, &dev_attr_bluetooth); 1216 device_remove_file(&device->dev, &dev_attr_display); 1217 device_remove_file(&device->dev, &dev_attr_ledd); 1218 device_remove_file(&device->dev, &dev_attr_ls_switch); 1219 device_remove_file(&device->dev, &dev_attr_ls_level); 1220 device_remove_file(&device->dev, &dev_attr_gps); 1221} 1222 1223static int asus_sysfs_init(struct asus_laptop *asus) 1224{ 1225 struct platform_device *device = asus->platform_device; 1226 int err; 1227 1228 err = device_create_file(&device->dev, &dev_attr_infos); 1229 if (err) 1230 return err; 1231 1232 if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL)) { 1233 err = device_create_file(&device->dev, &dev_attr_wlan); 1234 if (err) 1235 return err; 1236 } 1237 1238 if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL)) { 1239 err = device_create_file(&device->dev, &dev_attr_bluetooth); 1240 if (err) 1241 return err; 1242 } 1243 1244 if (!acpi_check_handle(asus->handle, METHOD_SWITCH_DISPLAY, NULL)) { 1245 err = device_create_file(&device->dev, &dev_attr_display); 1246 if (err) 1247 return err; 1248 } 1249 1250 if (!acpi_check_handle(asus->handle, METHOD_LEDD, NULL)) { 1251 err = device_create_file(&device->dev, &dev_attr_ledd); 1252 if (err) 1253 return err; 1254 } 1255 1256 if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) && 1257 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) { 1258 err = device_create_file(&device->dev, &dev_attr_ls_switch); 1259 if (err) 1260 return err; 1261 err = device_create_file(&device->dev, &dev_attr_ls_level); 1262 if (err) 1263 return err; 1264 } 1265 1266 if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) && 1267 !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) && 1268 !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL)) { 1269 err = device_create_file(&device->dev, &dev_attr_gps); 1270 if (err) 1271 return err; 1272 } 1273 1274 return err; 1275} 1276 1277static int asus_platform_init(struct asus_laptop *asus) 1278{ 1279 int err; 1280 1281 asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1); 1282 if (!asus->platform_device) 1283 return -ENOMEM; 1284 platform_set_drvdata(asus->platform_device, asus); 1285 1286 err = platform_device_add(asus->platform_device); 1287 if (err) 1288 goto fail_platform_device; 1289 1290 err = asus_sysfs_init(asus); 1291 if (err) 1292 goto fail_sysfs; 1293 return 0; 1294 1295fail_sysfs: 1296 asus_sysfs_exit(asus); 1297 platform_device_del(asus->platform_device); 1298fail_platform_device: 1299 platform_device_put(asus->platform_device); 1300 return err; 1301} 1302 1303static void asus_platform_exit(struct asus_laptop *asus) 1304{ 1305 asus_sysfs_exit(asus); 1306 platform_device_unregister(asus->platform_device); 1307} 1308 1309static struct platform_driver platform_driver = { 1310 .driver = { 1311 .name = ASUS_LAPTOP_FILE, 1312 .owner = THIS_MODULE, 1313 } 1314}; 1315 1316static int asus_handle_init(char *name, acpi_handle * handle, 1317 char **paths, int num_paths) 1318{ 1319 int i; 1320 acpi_status status; 1321 1322 for (i = 0; i < num_paths; i++) { 1323 status = acpi_get_handle(NULL, paths[i], handle); 1324 if (ACPI_SUCCESS(status)) 1325 return 0; 1326 } 1327 1328 *handle = NULL; 1329 return -ENODEV; 1330} 1331 1332#define ASUS_HANDLE_INIT(object) \ 1333 asus_handle_init(#object, &object##_handle, object##_paths, \ 1334 ARRAY_SIZE(object##_paths)) 1335 1336/* 1337 * This function is used to initialize the context with right values. In this 1338 * method, we can make all the detection we want, and modify the asus_laptop 1339 * struct 1340 */ 1341static int asus_laptop_get_info(struct asus_laptop *asus) 1342{ 1343 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 1344 union acpi_object *model = NULL; 1345 unsigned long long bsts_result, hwrs_result; 1346 char *string = NULL; 1347 acpi_status status; 1348 1349 /* 1350 * Get DSDT headers early enough to allow for differentiating between 1351 * models, but late enough to allow acpi_bus_register_driver() to fail 1352 * before doing anything ACPI-specific. Should we encounter a machine, 1353 * which needs special handling (i.e. its hotkey device has a different 1354 * HID), this bit will be moved. 1355 */ 1356 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info); 1357 if (ACPI_FAILURE(status)) 1358 pr_warning("Couldn't get the DSDT table header\n"); 1359 1360 /* We have to write 0 on init this far for all ASUS models */ 1361 if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) { 1362 pr_err("Hotkey initialization failed\n"); 1363 return -ENODEV; 1364 } 1365 1366 /* This needs to be called for some laptops to init properly */ 1367 status = 1368 acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result); 1369 if (ACPI_FAILURE(status)) 1370 pr_warning("Error calling BSTS\n"); 1371 else if (bsts_result) 1372 pr_notice("BSTS called, 0x%02x returned\n", 1373 (uint) bsts_result); 1374 1375 /* This too ... */ 1376 if (write_acpi_int(asus->handle, "CWAP", wapf)) 1377 pr_err("Error calling CWAP(%d)\n", wapf); 1378 /* 1379 * Try to match the object returned by INIT to the specific model. 1380 * Handle every possible object (or the lack of thereof) the DSDT 1381 * writers might throw at us. When in trouble, we pass NULL to 1382 * asus_model_match() and try something completely different. 1383 */ 1384 if (buffer.pointer) { 1385 model = buffer.pointer; 1386 switch (model->type) { 1387 case ACPI_TYPE_STRING: 1388 string = model->string.pointer; 1389 break; 1390 case ACPI_TYPE_BUFFER: 1391 string = model->buffer.pointer; 1392 break; 1393 default: 1394 string = ""; 1395 break; 1396 } 1397 } 1398 asus->name = kstrdup(string, GFP_KERNEL); 1399 if (!asus->name) 1400 return -ENOMEM; 1401 1402 if (*string) 1403 pr_notice(" %s model detected\n", string); 1404 1405 /* 1406 * The HWRS method return informations about the hardware. 1407 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 1408 * The significance of others is yet to be found. 1409 */ 1410 status = 1411 acpi_evaluate_integer(asus->handle, "HRWS", NULL, &hwrs_result); 1412 if (!ACPI_FAILURE(status)) 1413 pr_notice(" HRWS returned %x", (int)hwrs_result); 1414 1415 if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL)) 1416 asus->have_rsts = true; 1417 1418 /* Scheduled for removal */ 1419 ASUS_HANDLE_INIT(lcd_switch); 1420 ASUS_HANDLE_INIT(display_get); 1421 1422 kfree(model); 1423 1424 return AE_OK; 1425} 1426 1427static bool asus_device_present; 1428 1429static int __devinit asus_acpi_init(struct asus_laptop *asus) 1430{ 1431 int result = 0; 1432 1433 result = acpi_bus_get_status(asus->device); 1434 if (result) 1435 return result; 1436 if (!asus->device->status.present) { 1437 pr_err("Hotkey device not present, aborting\n"); 1438 return -ENODEV; 1439 } 1440 1441 result = asus_laptop_get_info(asus); 1442 if (result) 1443 return result; 1444 1445 /* WLED and BLED are on by default */ 1446 if (bluetooth_status >= 0) 1447 asus_bluetooth_set(asus, !!bluetooth_status); 1448 1449 if (wlan_status >= 0) 1450 asus_wlan_set(asus, !!wlan_status); 1451 1452 /* Keyboard Backlight is on by default */ 1453 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL)) 1454 asus_kled_set(asus, 1); 1455 1456 /* LED display is off by default */ 1457 asus->ledd_status = 0xFFF; 1458 1459 /* Set initial values of light sensor and level */ 1460 asus->light_switch = 0; /* Default to light sensor disabled */ 1461 asus->light_level = 5; /* level 5 for sensor sensitivity */ 1462 1463 if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) && 1464 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) { 1465 asus_als_switch(asus, asus->light_switch); 1466 asus_als_level(asus, asus->light_level); 1467 } 1468 1469 asus->lcd_state = 1; /* LCD should be on when the module load */ 1470 return result; 1471} 1472 1473static int __devinit asus_acpi_add(struct acpi_device *device) 1474{ 1475 struct asus_laptop *asus; 1476 int result; 1477 1478 pr_notice("Asus Laptop Support version %s\n", 1479 ASUS_LAPTOP_VERSION); 1480 asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL); 1481 if (!asus) 1482 return -ENOMEM; 1483 asus->handle = device->handle; 1484 strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME); 1485 strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS); 1486 device->driver_data = asus; 1487 asus->device = device; 1488 1489 result = asus_acpi_init(asus); 1490 if (result) 1491 goto fail_platform; 1492 1493 /* 1494 * Register the platform device first. It is used as a parent for the 1495 * sub-devices below. 1496 */ 1497 result = asus_platform_init(asus); 1498 if (result) 1499 goto fail_platform; 1500 1501 if (!acpi_video_backlight_support()) { 1502 result = asus_backlight_init(asus); 1503 if (result) 1504 goto fail_backlight; 1505 } else 1506 pr_info("Backlight controlled by ACPI video driver\n"); 1507 1508 result = asus_input_init(asus); 1509 if (result) 1510 goto fail_input; 1511 1512 result = asus_led_init(asus); 1513 if (result) 1514 goto fail_led; 1515 1516 result = asus_rfkill_init(asus); 1517 if (result) 1518 goto fail_rfkill; 1519 1520 asus_device_present = true; 1521 return 0; 1522 1523fail_rfkill: 1524 asus_led_exit(asus); 1525fail_led: 1526 asus_input_exit(asus); 1527fail_input: 1528 asus_backlight_exit(asus); 1529fail_backlight: 1530 asus_platform_exit(asus); 1531fail_platform: 1532 kfree(asus->name); 1533 kfree(asus); 1534 1535 return result; 1536} 1537 1538static int asus_acpi_remove(struct acpi_device *device, int type) 1539{ 1540 struct asus_laptop *asus = acpi_driver_data(device); 1541 1542 asus_backlight_exit(asus); 1543 asus_rfkill_exit(asus); 1544 asus_led_exit(asus); 1545 asus_input_exit(asus); 1546 asus_platform_exit(asus); 1547 1548 kfree(asus->name); 1549 kfree(asus); 1550 return 0; 1551} 1552 1553static const struct acpi_device_id asus_device_ids[] = { 1554 {"ATK0100", 0}, 1555 {"ATK0101", 0}, 1556 {"", 0}, 1557}; 1558MODULE_DEVICE_TABLE(acpi, asus_device_ids); 1559 1560static struct acpi_driver asus_acpi_driver = { 1561 .name = ASUS_LAPTOP_NAME, 1562 .class = ASUS_LAPTOP_CLASS, 1563 .owner = THIS_MODULE, 1564 .ids = asus_device_ids, 1565 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, 1566 .ops = { 1567 .add = asus_acpi_add, 1568 .remove = asus_acpi_remove, 1569 .notify = asus_acpi_notify, 1570 }, 1571}; 1572 1573static int __init asus_laptop_init(void) 1574{ 1575 int result; 1576 1577 result = platform_driver_register(&platform_driver); 1578 if (result < 0) 1579 return result; 1580 1581 result = acpi_bus_register_driver(&asus_acpi_driver); 1582 if (result < 0) 1583 goto fail_acpi_driver; 1584 if (!asus_device_present) { 1585 result = -ENODEV; 1586 goto fail_no_device; 1587 } 1588 return 0; 1589 1590fail_no_device: 1591 acpi_bus_unregister_driver(&asus_acpi_driver); 1592fail_acpi_driver: 1593 platform_driver_unregister(&platform_driver); 1594 return result; 1595} 1596 1597static void __exit asus_laptop_exit(void) 1598{ 1599 acpi_bus_unregister_driver(&asus_acpi_driver); 1600 platform_driver_unregister(&platform_driver); 1601} 1602 1603module_init(asus_laptop_init); 1604module_exit(asus_laptop_exit); 1605