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 * Copyright (C) 2011 Wind River Systems 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 * 23 * 24 * The development page for this driver is located at 25 * http://sourceforge.net/projects/acpi4asus/ 26 * 27 * Credits: 28 * Pontus Fuchs - Helper functions, cleanup 29 * Johann Wiesner - Small compile fixes 30 * John Belmonte - ACPI code for Toshiba laptop was a good starting point. 31 * Eric Burghard - LED display support for W1N 32 * Josh Green - Light Sens support 33 * Thomas Tuttle - His first patch for led support was very helpful 34 * Sam Lin - GPS support 35 */ 36 37#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 38 39#include <linux/kernel.h> 40#include <linux/module.h> 41#include <linux/init.h> 42#include <linux/types.h> 43#include <linux/err.h> 44#include <linux/proc_fs.h> 45#include <linux/backlight.h> 46#include <linux/fb.h> 47#include <linux/leds.h> 48#include <linux/platform_device.h> 49#include <linux/uaccess.h> 50#include <linux/input.h> 51#include <linux/input/sparse-keymap.h> 52#include <linux/input-polldev.h> 53#include <linux/rfkill.h> 54#include <linux/slab.h> 55#include <linux/dmi.h> 56#include <linux/acpi.h> 57 58#define ASUS_LAPTOP_VERSION "0.42" 59 60#define ASUS_LAPTOP_NAME "Asus Laptop Support" 61#define ASUS_LAPTOP_CLASS "hotkey" 62#define ASUS_LAPTOP_DEVICE_NAME "Hotkey" 63#define ASUS_LAPTOP_FILE KBUILD_MODNAME 64#define ASUS_LAPTOP_PREFIX "\\_SB.ATKD." 65 66MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary"); 67MODULE_DESCRIPTION(ASUS_LAPTOP_NAME); 68MODULE_LICENSE("GPL"); 69 70/* 71 * WAPF defines the behavior of the Fn+Fx wlan key 72 * The significance of values is yet to be found, but 73 * most of the time: 74 * Bit | Bluetooth | WLAN 75 * 0 | Hardware | Hardware 76 * 1 | Hardware | Software 77 * 4 | Software | Software 78 */ 79static uint wapf = 1; 80module_param(wapf, uint, 0444); 81MODULE_PARM_DESC(wapf, "WAPF value"); 82 83static char *wled_type = "unknown"; 84static char *bled_type = "unknown"; 85 86module_param(wled_type, charp, 0444); 87MODULE_PARM_DESC(wled_type, "Set the wled type on boot " 88 "(unknown, led or rfkill). " 89 "default is unknown"); 90 91module_param(bled_type, charp, 0444); 92MODULE_PARM_DESC(bled_type, "Set the bled type on boot " 93 "(unknown, led or rfkill). " 94 "default is unknown"); 95 96static int wlan_status = 1; 97static int bluetooth_status = 1; 98static int wimax_status = -1; 99static int wwan_status = -1; 100static int als_status; 101 102module_param(wlan_status, int, 0444); 103MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot " 104 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 105 "default is -1"); 106 107module_param(bluetooth_status, int, 0444); 108MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot " 109 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 110 "default is -1"); 111 112module_param(wimax_status, int, 0444); 113MODULE_PARM_DESC(wimax_status, "Set the wireless status on boot " 114 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 115 "default is -1"); 116 117module_param(wwan_status, int, 0444); 118MODULE_PARM_DESC(wwan_status, "Set the wireless status on boot " 119 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 120 "default is -1"); 121 122module_param(als_status, int, 0444); 123MODULE_PARM_DESC(als_status, "Set the ALS status on boot " 124 "(0 = disabled, 1 = enabled). " 125 "default is 0"); 126 127/* 128 * Some events we use, same for all Asus 129 */ 130#define ATKD_BRNUP_MIN 0x10 131#define ATKD_BRNUP_MAX 0x1f 132#define ATKD_BRNDOWN_MIN 0x20 133#define ATKD_BRNDOWN_MAX 0x2f 134#define ATKD_BRNDOWN 0x20 135#define ATKD_BRNUP 0x2f 136#define ATKD_LCD_ON 0x33 137#define ATKD_LCD_OFF 0x34 138 139/* 140 * Known bits returned by \_SB.ATKD.HWRS 141 */ 142#define WL_HWRS 0x80 143#define BT_HWRS 0x100 144 145/* 146 * Flags for hotk status 147 * WL_ON and BT_ON are also used for wireless_status() 148 */ 149#define WL_RSTS 0x01 /* internal Wifi */ 150#define BT_RSTS 0x02 /* internal Bluetooth */ 151#define WM_RSTS 0x08 /* internal wimax */ 152#define WW_RSTS 0x20 /* internal wwan */ 153 154/* WLED and BLED type */ 155#define TYPE_UNKNOWN 0 156#define TYPE_LED 1 157#define TYPE_RFKILL 2 158 159/* LED */ 160#define METHOD_MLED "MLED" 161#define METHOD_TLED "TLED" 162#define METHOD_RLED "RLED" /* W1JC */ 163#define METHOD_PLED "PLED" /* A7J */ 164#define METHOD_GLED "GLED" /* G1, G2 (probably) */ 165 166/* LEDD */ 167#define METHOD_LEDD "SLCM" 168 169/* 170 * Bluetooth and WLAN 171 * WLED and BLED are not handled like other XLED, because in some dsdt 172 * they also control the WLAN/Bluetooth device. 173 */ 174#define METHOD_WLAN "WLED" 175#define METHOD_BLUETOOTH "BLED" 176 177/* WWAN and WIMAX */ 178#define METHOD_WWAN "GSMC" 179#define METHOD_WIMAX "WMXC" 180 181#define METHOD_WL_STATUS "RSTS" 182 183/* Brightness */ 184#define METHOD_BRIGHTNESS_SET "SPLV" 185#define METHOD_BRIGHTNESS_GET "GPLV" 186 187/* Display */ 188#define METHOD_SWITCH_DISPLAY "SDSP" 189 190#define METHOD_ALS_CONTROL "ALSC" /* Z71A Z71V */ 191#define METHOD_ALS_LEVEL "ALSL" /* Z71A Z71V */ 192 193/* GPS */ 194/* R2H use different handle for GPS on/off */ 195#define METHOD_GPS_ON "SDON" 196#define METHOD_GPS_OFF "SDOF" 197#define METHOD_GPS_STATUS "GPST" 198 199/* Keyboard light */ 200#define METHOD_KBD_LIGHT_SET "SLKB" 201#define METHOD_KBD_LIGHT_GET "GLKB" 202 203/* For Pegatron Lucid tablet */ 204#define DEVICE_NAME_PEGA "Lucid" 205 206#define METHOD_PEGA_ENABLE "ENPR" 207#define METHOD_PEGA_DISABLE "DAPR" 208#define PEGA_WLAN 0x00 209#define PEGA_BLUETOOTH 0x01 210#define PEGA_WWAN 0x02 211#define PEGA_ALS 0x04 212#define PEGA_ALS_POWER 0x05 213 214#define METHOD_PEGA_READ "RDLN" 215#define PEGA_READ_ALS_H 0x02 216#define PEGA_READ_ALS_L 0x03 217 218#define PEGA_ACCEL_NAME "pega_accel" 219#define PEGA_ACCEL_DESC "Pegatron Lucid Tablet Accelerometer" 220#define METHOD_XLRX "XLRX" 221#define METHOD_XLRY "XLRY" 222#define METHOD_XLRZ "XLRZ" 223#define PEGA_ACC_CLAMP 512 /* 1G accel is reported as ~256, so clamp to 2G */ 224#define PEGA_ACC_RETRIES 3 225 226/* 227 * Define a specific led structure to keep the main structure clean 228 */ 229struct asus_led { 230 int wk; 231 struct work_struct work; 232 struct led_classdev led; 233 struct asus_laptop *asus; 234 const char *method; 235}; 236 237/* 238 * Same thing for rfkill 239 */ 240struct asus_rfkill { 241 /* type of control. Maps to PEGA_* values or *_RSTS */ 242 int control_id; 243 struct rfkill *rfkill; 244 struct asus_laptop *asus; 245}; 246 247/* 248 * This is the main structure, we can use it to store anything interesting 249 * about the hotk device 250 */ 251struct asus_laptop { 252 char *name; /* laptop name */ 253 254 struct acpi_table_header *dsdt_info; 255 struct platform_device *platform_device; 256 struct acpi_device *device; /* the device we are in */ 257 struct backlight_device *backlight_device; 258 259 struct input_dev *inputdev; 260 struct key_entry *keymap; 261 struct input_polled_dev *pega_accel_poll; 262 263 struct asus_led wled; 264 struct asus_led bled; 265 struct asus_led mled; 266 struct asus_led tled; 267 struct asus_led rled; 268 struct asus_led pled; 269 struct asus_led gled; 270 struct asus_led kled; 271 struct workqueue_struct *led_workqueue; 272 273 int wled_type; 274 int bled_type; 275 int wireless_status; 276 bool have_rsts; 277 bool is_pega_lucid; 278 bool pega_acc_live; 279 int pega_acc_x; 280 int pega_acc_y; 281 int pega_acc_z; 282 283 struct asus_rfkill wlan; 284 struct asus_rfkill bluetooth; 285 struct asus_rfkill wwan; 286 struct asus_rfkill wimax; 287 struct asus_rfkill gps; 288 289 acpi_handle handle; /* the handle of the hotk device */ 290 u32 ledd_status; /* status of the LED display */ 291 u8 light_level; /* light sensor level */ 292 u8 light_switch; /* light sensor switch value */ 293 u16 event_count[128]; /* count for each event TODO make this better */ 294}; 295 296static const struct key_entry asus_keymap[] = { 297 /* Lenovo SL Specific keycodes */ 298 {KE_KEY, 0x02, { KEY_SCREENLOCK } }, 299 {KE_KEY, 0x05, { KEY_WLAN } }, 300 {KE_KEY, 0x08, { KEY_F13 } }, 301 {KE_KEY, 0x09, { KEY_PROG2 } }, /* Dock */ 302 {KE_KEY, 0x17, { KEY_ZOOM } }, 303 {KE_KEY, 0x1f, { KEY_BATTERY } }, 304 /* End of Lenovo SL Specific keycodes */ 305 {KE_KEY, ATKD_BRNDOWN, { KEY_BRIGHTNESSDOWN } }, 306 {KE_KEY, ATKD_BRNUP, { KEY_BRIGHTNESSUP } }, 307 {KE_KEY, 0x30, { KEY_VOLUMEUP } }, 308 {KE_KEY, 0x31, { KEY_VOLUMEDOWN } }, 309 {KE_KEY, 0x32, { KEY_MUTE } }, 310 {KE_KEY, 0x33, { KEY_DISPLAYTOGGLE } }, /* LCD on */ 311 {KE_KEY, 0x34, { KEY_DISPLAY_OFF } }, /* LCD off */ 312 {KE_KEY, 0x40, { KEY_PREVIOUSSONG } }, 313 {KE_KEY, 0x41, { KEY_NEXTSONG } }, 314 {KE_KEY, 0x43, { KEY_STOPCD } }, /* Stop/Eject */ 315 {KE_KEY, 0x45, { KEY_PLAYPAUSE } }, 316 {KE_KEY, 0x4c, { KEY_MEDIA } }, /* WMP Key */ 317 {KE_KEY, 0x50, { KEY_EMAIL } }, 318 {KE_KEY, 0x51, { KEY_WWW } }, 319 {KE_KEY, 0x55, { KEY_CALC } }, 320 {KE_IGNORE, 0x57, }, /* Battery mode */ 321 {KE_IGNORE, 0x58, }, /* AC mode */ 322 {KE_KEY, 0x5C, { KEY_SCREENLOCK } }, /* Screenlock */ 323 {KE_KEY, 0x5D, { KEY_WLAN } }, /* WLAN Toggle */ 324 {KE_KEY, 0x5E, { KEY_WLAN } }, /* WLAN Enable */ 325 {KE_KEY, 0x5F, { KEY_WLAN } }, /* WLAN Disable */ 326 {KE_KEY, 0x60, { KEY_TOUCHPAD_ON } }, 327 {KE_KEY, 0x61, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD only */ 328 {KE_KEY, 0x62, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT only */ 329 {KE_KEY, 0x63, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT */ 330 {KE_KEY, 0x64, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV */ 331 {KE_KEY, 0x65, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV */ 332 {KE_KEY, 0x66, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV */ 333 {KE_KEY, 0x67, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV */ 334 {KE_KEY, 0x6B, { KEY_TOUCHPAD_TOGGLE } }, /* Lock Touchpad */ 335 {KE_KEY, 0x6C, { KEY_SLEEP } }, /* Suspend */ 336 {KE_KEY, 0x6D, { KEY_SLEEP } }, /* Hibernate */ 337 {KE_IGNORE, 0x6E, }, /* Low Battery notification */ 338 {KE_KEY, 0x7D, { KEY_BLUETOOTH } }, /* Bluetooth Enable */ 339 {KE_KEY, 0x7E, { KEY_BLUETOOTH } }, /* Bluetooth Disable */ 340 {KE_KEY, 0x82, { KEY_CAMERA } }, 341 {KE_KEY, 0x88, { KEY_RFKILL } }, /* Radio Toggle Key */ 342 {KE_KEY, 0x8A, { KEY_PROG1 } }, /* Color enhancement mode */ 343 {KE_KEY, 0x8C, { KEY_SWITCHVIDEOMODE } }, /* SDSP DVI only */ 344 {KE_KEY, 0x8D, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + DVI */ 345 {KE_KEY, 0x8E, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + DVI */ 346 {KE_KEY, 0x8F, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV + DVI */ 347 {KE_KEY, 0x90, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + DVI */ 348 {KE_KEY, 0x91, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV + DVI */ 349 {KE_KEY, 0x92, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV + DVI */ 350 {KE_KEY, 0x93, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV + DVI */ 351 {KE_KEY, 0x95, { KEY_MEDIA } }, 352 {KE_KEY, 0x99, { KEY_PHONE } }, 353 {KE_KEY, 0xA0, { KEY_SWITCHVIDEOMODE } }, /* SDSP HDMI only */ 354 {KE_KEY, 0xA1, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + HDMI */ 355 {KE_KEY, 0xA2, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + HDMI */ 356 {KE_KEY, 0xA3, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV + HDMI */ 357 {KE_KEY, 0xA4, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + HDMI */ 358 {KE_KEY, 0xA5, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV + HDMI */ 359 {KE_KEY, 0xA6, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV + HDMI */ 360 {KE_KEY, 0xA7, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV + HDMI */ 361 {KE_KEY, 0xB5, { KEY_CALC } }, 362 {KE_KEY, 0xC4, { KEY_KBDILLUMUP } }, 363 {KE_KEY, 0xC5, { KEY_KBDILLUMDOWN } }, 364 {KE_END, 0}, 365}; 366 367 368/* 369 * This function evaluates an ACPI method, given an int as parameter, the 370 * method is searched within the scope of the handle, can be NULL. The output 371 * of the method is written is output, which can also be NULL 372 * 373 * returns 0 if write is successful, -1 else. 374 */ 375static int write_acpi_int_ret(acpi_handle handle, const char *method, int val, 376 struct acpi_buffer *output) 377{ 378 struct acpi_object_list params; /* list of input parameters (an int) */ 379 union acpi_object in_obj; /* the only param we use */ 380 acpi_status status; 381 382 if (!handle) 383 return -1; 384 385 params.count = 1; 386 params.pointer = &in_obj; 387 in_obj.type = ACPI_TYPE_INTEGER; 388 in_obj.integer.value = val; 389 390 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); 391 if (status == AE_OK) 392 return 0; 393 else 394 return -1; 395} 396 397static int write_acpi_int(acpi_handle handle, const char *method, int val) 398{ 399 return write_acpi_int_ret(handle, method, val, NULL); 400} 401 402static int acpi_check_handle(acpi_handle handle, const char *method, 403 acpi_handle *ret) 404{ 405 acpi_status status; 406 407 if (method == NULL) 408 return -ENODEV; 409 410 if (ret) 411 status = acpi_get_handle(handle, (char *)method, 412 ret); 413 else { 414 acpi_handle dummy; 415 416 status = acpi_get_handle(handle, (char *)method, 417 &dummy); 418 } 419 420 if (status != AE_OK) { 421 if (ret) 422 pr_warn("Error finding %s\n", method); 423 return -ENODEV; 424 } 425 return 0; 426} 427 428static bool asus_check_pega_lucid(struct asus_laptop *asus) 429{ 430 return !strcmp(asus->name, DEVICE_NAME_PEGA) && 431 !acpi_check_handle(asus->handle, METHOD_PEGA_ENABLE, NULL) && 432 !acpi_check_handle(asus->handle, METHOD_PEGA_DISABLE, NULL) && 433 !acpi_check_handle(asus->handle, METHOD_PEGA_READ, NULL); 434} 435 436static int asus_pega_lucid_set(struct asus_laptop *asus, int unit, bool enable) 437{ 438 char *method = enable ? METHOD_PEGA_ENABLE : METHOD_PEGA_DISABLE; 439 return write_acpi_int(asus->handle, method, unit); 440} 441 442static int pega_acc_axis(struct asus_laptop *asus, int curr, char *method) 443{ 444 int i, delta; 445 unsigned long long val; 446 for (i = 0; i < PEGA_ACC_RETRIES; i++) { 447 acpi_evaluate_integer(asus->handle, method, NULL, &val); 448 449 /* The output is noisy. From reading the ASL 450 * dissassembly, timeout errors are returned with 1's 451 * in the high word, and the lack of locking around 452 * thei hi/lo byte reads means that a transition 453 * between (for example) -1 and 0 could be read as 454 * 0xff00 or 0x00ff. */ 455 delta = abs(curr - (short)val); 456 if (delta < 128 && !(val & ~0xffff)) 457 break; 458 } 459 return clamp_val((short)val, -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP); 460} 461 462static void pega_accel_poll(struct input_polled_dev *ipd) 463{ 464 struct device *parent = ipd->input->dev.parent; 465 struct asus_laptop *asus = dev_get_drvdata(parent); 466 467 /* In some cases, the very first call to poll causes a 468 * recursive fault under the polldev worker. This is 469 * apparently related to very early userspace access to the 470 * device, and perhaps a firmware bug. Fake the first report. */ 471 if (!asus->pega_acc_live) { 472 asus->pega_acc_live = true; 473 input_report_abs(ipd->input, ABS_X, 0); 474 input_report_abs(ipd->input, ABS_Y, 0); 475 input_report_abs(ipd->input, ABS_Z, 0); 476 input_sync(ipd->input); 477 return; 478 } 479 480 asus->pega_acc_x = pega_acc_axis(asus, asus->pega_acc_x, METHOD_XLRX); 481 asus->pega_acc_y = pega_acc_axis(asus, asus->pega_acc_y, METHOD_XLRY); 482 asus->pega_acc_z = pega_acc_axis(asus, asus->pega_acc_z, METHOD_XLRZ); 483 484 /* Note transform, convert to "right/up/out" in the native 485 * landscape orientation (i.e. the vector is the direction of 486 * "real up" in the device's cartiesian coordinates). */ 487 input_report_abs(ipd->input, ABS_X, -asus->pega_acc_x); 488 input_report_abs(ipd->input, ABS_Y, -asus->pega_acc_y); 489 input_report_abs(ipd->input, ABS_Z, asus->pega_acc_z); 490 input_sync(ipd->input); 491} 492 493static void pega_accel_exit(struct asus_laptop *asus) 494{ 495 if (asus->pega_accel_poll) { 496 input_unregister_polled_device(asus->pega_accel_poll); 497 input_free_polled_device(asus->pega_accel_poll); 498 } 499 asus->pega_accel_poll = NULL; 500} 501 502static int pega_accel_init(struct asus_laptop *asus) 503{ 504 int err; 505 struct input_polled_dev *ipd; 506 507 if (!asus->is_pega_lucid) 508 return -ENODEV; 509 510 if (acpi_check_handle(asus->handle, METHOD_XLRX, NULL) || 511 acpi_check_handle(asus->handle, METHOD_XLRY, NULL) || 512 acpi_check_handle(asus->handle, METHOD_XLRZ, NULL)) 513 return -ENODEV; 514 515 ipd = input_allocate_polled_device(); 516 if (!ipd) 517 return -ENOMEM; 518 519 ipd->poll = pega_accel_poll; 520 ipd->poll_interval = 125; 521 ipd->poll_interval_min = 50; 522 ipd->poll_interval_max = 2000; 523 524 ipd->input->name = PEGA_ACCEL_DESC; 525 ipd->input->phys = PEGA_ACCEL_NAME "/input0"; 526 ipd->input->dev.parent = &asus->platform_device->dev; 527 ipd->input->id.bustype = BUS_HOST; 528 529 set_bit(EV_ABS, ipd->input->evbit); 530 input_set_abs_params(ipd->input, ABS_X, 531 -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0); 532 input_set_abs_params(ipd->input, ABS_Y, 533 -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0); 534 input_set_abs_params(ipd->input, ABS_Z, 535 -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0); 536 537 err = input_register_polled_device(ipd); 538 if (err) 539 goto exit; 540 541 asus->pega_accel_poll = ipd; 542 return 0; 543 544exit: 545 input_free_polled_device(ipd); 546 return err; 547} 548 549/* Generic LED function */ 550static int asus_led_set(struct asus_laptop *asus, const char *method, 551 int value) 552{ 553 if (!strcmp(method, METHOD_MLED)) 554 value = !value; 555 else if (!strcmp(method, METHOD_GLED)) 556 value = !value + 1; 557 else 558 value = !!value; 559 560 return write_acpi_int(asus->handle, method, value); 561} 562 563/* 564 * LEDs 565 */ 566/* /sys/class/led handlers */ 567static void asus_led_cdev_set(struct led_classdev *led_cdev, 568 enum led_brightness value) 569{ 570 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 571 struct asus_laptop *asus = led->asus; 572 573 led->wk = !!value; 574 queue_work(asus->led_workqueue, &led->work); 575} 576 577static void asus_led_cdev_update(struct work_struct *work) 578{ 579 struct asus_led *led = container_of(work, struct asus_led, work); 580 struct asus_laptop *asus = led->asus; 581 582 asus_led_set(asus, led->method, led->wk); 583} 584 585static enum led_brightness asus_led_cdev_get(struct led_classdev *led_cdev) 586{ 587 return led_cdev->brightness; 588} 589 590/* 591 * Keyboard backlight (also a LED) 592 */ 593static int asus_kled_lvl(struct asus_laptop *asus) 594{ 595 unsigned long long kblv; 596 struct acpi_object_list params; 597 union acpi_object in_obj; 598 acpi_status rv; 599 600 params.count = 1; 601 params.pointer = &in_obj; 602 in_obj.type = ACPI_TYPE_INTEGER; 603 in_obj.integer.value = 2; 604 605 rv = acpi_evaluate_integer(asus->handle, METHOD_KBD_LIGHT_GET, 606 ¶ms, &kblv); 607 if (ACPI_FAILURE(rv)) { 608 pr_warn("Error reading kled level\n"); 609 return -ENODEV; 610 } 611 return kblv; 612} 613 614static int asus_kled_set(struct asus_laptop *asus, int kblv) 615{ 616 if (kblv > 0) 617 kblv = (1 << 7) | (kblv & 0x7F); 618 else 619 kblv = 0; 620 621 if (write_acpi_int(asus->handle, METHOD_KBD_LIGHT_SET, kblv)) { 622 pr_warn("Keyboard LED display write failed\n"); 623 return -EINVAL; 624 } 625 return 0; 626} 627 628static void asus_kled_cdev_set(struct led_classdev *led_cdev, 629 enum led_brightness value) 630{ 631 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 632 struct asus_laptop *asus = led->asus; 633 634 led->wk = value; 635 queue_work(asus->led_workqueue, &led->work); 636} 637 638static void asus_kled_cdev_update(struct work_struct *work) 639{ 640 struct asus_led *led = container_of(work, struct asus_led, work); 641 struct asus_laptop *asus = led->asus; 642 643 asus_kled_set(asus, led->wk); 644} 645 646static enum led_brightness asus_kled_cdev_get(struct led_classdev *led_cdev) 647{ 648 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 649 struct asus_laptop *asus = led->asus; 650 651 return asus_kled_lvl(asus); 652} 653 654static void asus_led_exit(struct asus_laptop *asus) 655{ 656 if (!IS_ERR_OR_NULL(asus->wled.led.dev)) 657 led_classdev_unregister(&asus->wled.led); 658 if (!IS_ERR_OR_NULL(asus->bled.led.dev)) 659 led_classdev_unregister(&asus->bled.led); 660 if (!IS_ERR_OR_NULL(asus->mled.led.dev)) 661 led_classdev_unregister(&asus->mled.led); 662 if (!IS_ERR_OR_NULL(asus->tled.led.dev)) 663 led_classdev_unregister(&asus->tled.led); 664 if (!IS_ERR_OR_NULL(asus->pled.led.dev)) 665 led_classdev_unregister(&asus->pled.led); 666 if (!IS_ERR_OR_NULL(asus->rled.led.dev)) 667 led_classdev_unregister(&asus->rled.led); 668 if (!IS_ERR_OR_NULL(asus->gled.led.dev)) 669 led_classdev_unregister(&asus->gled.led); 670 if (!IS_ERR_OR_NULL(asus->kled.led.dev)) 671 led_classdev_unregister(&asus->kled.led); 672 if (asus->led_workqueue) { 673 destroy_workqueue(asus->led_workqueue); 674 asus->led_workqueue = NULL; 675 } 676} 677 678/* Ugly macro, need to fix that later */ 679static int asus_led_register(struct asus_laptop *asus, 680 struct asus_led *led, 681 const char *name, const char *method) 682{ 683 struct led_classdev *led_cdev = &led->led; 684 685 if (!method || acpi_check_handle(asus->handle, method, NULL)) 686 return 0; /* Led not present */ 687 688 led->asus = asus; 689 led->method = method; 690 691 INIT_WORK(&led->work, asus_led_cdev_update); 692 led_cdev->name = name; 693 led_cdev->brightness_set = asus_led_cdev_set; 694 led_cdev->brightness_get = asus_led_cdev_get; 695 led_cdev->max_brightness = 1; 696 return led_classdev_register(&asus->platform_device->dev, led_cdev); 697} 698 699static int asus_led_init(struct asus_laptop *asus) 700{ 701 int r = 0; 702 703 /* 704 * The Pegatron Lucid has no physical leds, but all methods are 705 * available in the DSDT... 706 */ 707 if (asus->is_pega_lucid) 708 return 0; 709 710 /* 711 * Functions that actually update the LED's are called from a 712 * workqueue. By doing this as separate work rather than when the LED 713 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 714 * potentially bad time, such as a timer interrupt. 715 */ 716 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 717 if (!asus->led_workqueue) 718 return -ENOMEM; 719 720 if (asus->wled_type == TYPE_LED) 721 r = asus_led_register(asus, &asus->wled, "asus::wlan", 722 METHOD_WLAN); 723 if (r) 724 goto error; 725 if (asus->bled_type == TYPE_LED) 726 r = asus_led_register(asus, &asus->bled, "asus::bluetooth", 727 METHOD_BLUETOOTH); 728 if (r) 729 goto error; 730 r = asus_led_register(asus, &asus->mled, "asus::mail", METHOD_MLED); 731 if (r) 732 goto error; 733 r = asus_led_register(asus, &asus->tled, "asus::touchpad", METHOD_TLED); 734 if (r) 735 goto error; 736 r = asus_led_register(asus, &asus->rled, "asus::record", METHOD_RLED); 737 if (r) 738 goto error; 739 r = asus_led_register(asus, &asus->pled, "asus::phone", METHOD_PLED); 740 if (r) 741 goto error; 742 r = asus_led_register(asus, &asus->gled, "asus::gaming", METHOD_GLED); 743 if (r) 744 goto error; 745 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL) && 746 !acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_GET, NULL)) { 747 struct asus_led *led = &asus->kled; 748 struct led_classdev *cdev = &led->led; 749 750 led->asus = asus; 751 752 INIT_WORK(&led->work, asus_kled_cdev_update); 753 cdev->name = "asus::kbd_backlight"; 754 cdev->brightness_set = asus_kled_cdev_set; 755 cdev->brightness_get = asus_kled_cdev_get; 756 cdev->max_brightness = 3; 757 r = led_classdev_register(&asus->platform_device->dev, cdev); 758 } 759error: 760 if (r) 761 asus_led_exit(asus); 762 return r; 763} 764 765/* 766 * Backlight device 767 */ 768static int asus_read_brightness(struct backlight_device *bd) 769{ 770 struct asus_laptop *asus = bl_get_data(bd); 771 unsigned long long value; 772 acpi_status rv = AE_OK; 773 774 rv = acpi_evaluate_integer(asus->handle, METHOD_BRIGHTNESS_GET, 775 NULL, &value); 776 if (ACPI_FAILURE(rv)) 777 pr_warn("Error reading brightness\n"); 778 779 return value; 780} 781 782static int asus_set_brightness(struct backlight_device *bd, int value) 783{ 784 struct asus_laptop *asus = bl_get_data(bd); 785 786 if (write_acpi_int(asus->handle, METHOD_BRIGHTNESS_SET, value)) { 787 pr_warn("Error changing brightness\n"); 788 return -EIO; 789 } 790 return 0; 791} 792 793static int update_bl_status(struct backlight_device *bd) 794{ 795 int value = bd->props.brightness; 796 797 return asus_set_brightness(bd, value); 798} 799 800static const struct backlight_ops asusbl_ops = { 801 .get_brightness = asus_read_brightness, 802 .update_status = update_bl_status, 803}; 804 805static int asus_backlight_notify(struct asus_laptop *asus) 806{ 807 struct backlight_device *bd = asus->backlight_device; 808 int old = bd->props.brightness; 809 810 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 811 812 return old; 813} 814 815static int asus_backlight_init(struct asus_laptop *asus) 816{ 817 struct backlight_device *bd; 818 struct backlight_properties props; 819 820 if (acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) || 821 acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL)) 822 return 0; 823 824 memset(&props, 0, sizeof(struct backlight_properties)); 825 props.max_brightness = 15; 826 props.type = BACKLIGHT_PLATFORM; 827 828 bd = backlight_device_register(ASUS_LAPTOP_FILE, 829 &asus->platform_device->dev, asus, 830 &asusbl_ops, &props); 831 if (IS_ERR(bd)) { 832 pr_err("Could not register asus backlight device\n"); 833 asus->backlight_device = NULL; 834 return PTR_ERR(bd); 835 } 836 837 asus->backlight_device = bd; 838 bd->props.brightness = asus_read_brightness(bd); 839 bd->props.power = FB_BLANK_UNBLANK; 840 backlight_update_status(bd); 841 return 0; 842} 843 844static void asus_backlight_exit(struct asus_laptop *asus) 845{ 846 backlight_device_unregister(asus->backlight_device); 847 asus->backlight_device = NULL; 848} 849 850/* 851 * Platform device handlers 852 */ 853 854/* 855 * We write our info in page, we begin at offset off and cannot write more 856 * than count bytes. We set eof to 1 if we handle those 2 values. We return the 857 * number of bytes written in page 858 */ 859static ssize_t infos_show(struct device *dev, struct device_attribute *attr, 860 char *page) 861{ 862 struct asus_laptop *asus = dev_get_drvdata(dev); 863 int len = 0; 864 unsigned long long temp; 865 char buf[16]; /* enough for all info */ 866 acpi_status rv = AE_OK; 867 868 /* 869 * We use the easy way, we don't care of off and count, 870 * so we don't set eof to 1 871 */ 872 873 len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n"); 874 len += sprintf(page + len, "Model reference : %s\n", asus->name); 875 /* 876 * The SFUN method probably allows the original driver to get the list 877 * of features supported by a given model. For now, 0x0100 or 0x0800 878 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 879 * The significance of others is yet to be found. 880 */ 881 rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp); 882 if (!ACPI_FAILURE(rv)) 883 len += sprintf(page + len, "SFUN value : %#x\n", 884 (uint) temp); 885 /* 886 * The HWRS method return informations about the hardware. 887 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 888 * 0x40 for WWAN, 0x10 for WIMAX. 889 * The significance of others is yet to be found. 890 * We don't currently use this for device detection, and it 891 * takes several seconds to run on some systems. 892 */ 893 rv = acpi_evaluate_integer(asus->handle, "HWRS", NULL, &temp); 894 if (!ACPI_FAILURE(rv)) 895 len += sprintf(page + len, "HWRS value : %#x\n", 896 (uint) temp); 897 /* 898 * Another value for userspace: the ASYM method returns 0x02 for 899 * battery low and 0x04 for battery critical, its readings tend to be 900 * more accurate than those provided by _BST. 901 * Note: since not all the laptops provide this method, errors are 902 * silently ignored. 903 */ 904 rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp); 905 if (!ACPI_FAILURE(rv)) 906 len += sprintf(page + len, "ASYM value : %#x\n", 907 (uint) temp); 908 if (asus->dsdt_info) { 909 snprintf(buf, 16, "%d", asus->dsdt_info->length); 910 len += sprintf(page + len, "DSDT length : %s\n", buf); 911 snprintf(buf, 16, "%d", asus->dsdt_info->checksum); 912 len += sprintf(page + len, "DSDT checksum : %s\n", buf); 913 snprintf(buf, 16, "%d", asus->dsdt_info->revision); 914 len += sprintf(page + len, "DSDT revision : %s\n", buf); 915 snprintf(buf, 7, "%s", asus->dsdt_info->oem_id); 916 len += sprintf(page + len, "OEM id : %s\n", buf); 917 snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id); 918 len += sprintf(page + len, "OEM table id : %s\n", buf); 919 snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision); 920 len += sprintf(page + len, "OEM revision : 0x%s\n", buf); 921 snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id); 922 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); 923 snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision); 924 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); 925 } 926 927 return len; 928} 929static DEVICE_ATTR_RO(infos); 930 931static int parse_arg(const char *buf, unsigned long count, int *val) 932{ 933 if (!count) 934 return 0; 935 if (count > 31) 936 return -EINVAL; 937 if (sscanf(buf, "%i", val) != 1) 938 return -EINVAL; 939 return count; 940} 941 942static ssize_t sysfs_acpi_set(struct asus_laptop *asus, 943 const char *buf, size_t count, 944 const char *method) 945{ 946 int rv, value; 947 int out = 0; 948 949 rv = parse_arg(buf, count, &value); 950 if (rv > 0) 951 out = value ? 1 : 0; 952 953 if (write_acpi_int(asus->handle, method, value)) 954 return -ENODEV; 955 return rv; 956} 957 958/* 959 * LEDD display 960 */ 961static ssize_t ledd_show(struct device *dev, struct device_attribute *attr, 962 char *buf) 963{ 964 struct asus_laptop *asus = dev_get_drvdata(dev); 965 966 return sprintf(buf, "0x%08x\n", asus->ledd_status); 967} 968 969static ssize_t ledd_store(struct device *dev, struct device_attribute *attr, 970 const char *buf, size_t count) 971{ 972 struct asus_laptop *asus = dev_get_drvdata(dev); 973 int rv, value; 974 975 rv = parse_arg(buf, count, &value); 976 if (rv > 0) { 977 if (write_acpi_int(asus->handle, METHOD_LEDD, value)) { 978 pr_warn("LED display write failed\n"); 979 return -ENODEV; 980 } 981 asus->ledd_status = (u32) value; 982 } 983 return rv; 984} 985static DEVICE_ATTR_RW(ledd); 986 987/* 988 * Wireless 989 */ 990static int asus_wireless_status(struct asus_laptop *asus, int mask) 991{ 992 unsigned long long status; 993 acpi_status rv = AE_OK; 994 995 if (!asus->have_rsts) 996 return (asus->wireless_status & mask) ? 1 : 0; 997 998 rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS, 999 NULL, &status); 1000 if (ACPI_FAILURE(rv)) { 1001 pr_warn("Error reading Wireless status\n"); 1002 return -EINVAL; 1003 } 1004 return !!(status & mask); 1005} 1006 1007/* 1008 * WLAN 1009 */ 1010static int asus_wlan_set(struct asus_laptop *asus, int status) 1011{ 1012 if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) { 1013 pr_warn("Error setting wlan status to %d\n", status); 1014 return -EIO; 1015 } 1016 return 0; 1017} 1018 1019static ssize_t wlan_show(struct device *dev, struct device_attribute *attr, 1020 char *buf) 1021{ 1022 struct asus_laptop *asus = dev_get_drvdata(dev); 1023 1024 return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS)); 1025} 1026 1027static ssize_t wlan_store(struct device *dev, struct device_attribute *attr, 1028 const char *buf, size_t count) 1029{ 1030 struct asus_laptop *asus = dev_get_drvdata(dev); 1031 1032 return sysfs_acpi_set(asus, buf, count, METHOD_WLAN); 1033} 1034static DEVICE_ATTR_RW(wlan); 1035 1036/*e 1037 * Bluetooth 1038 */ 1039static int asus_bluetooth_set(struct asus_laptop *asus, int status) 1040{ 1041 if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) { 1042 pr_warn("Error setting bluetooth status to %d\n", status); 1043 return -EIO; 1044 } 1045 return 0; 1046} 1047 1048static ssize_t bluetooth_show(struct device *dev, struct device_attribute *attr, 1049 char *buf) 1050{ 1051 struct asus_laptop *asus = dev_get_drvdata(dev); 1052 1053 return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS)); 1054} 1055 1056static ssize_t bluetooth_store(struct device *dev, 1057 struct device_attribute *attr, const char *buf, 1058 size_t count) 1059{ 1060 struct asus_laptop *asus = dev_get_drvdata(dev); 1061 1062 return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH); 1063} 1064static DEVICE_ATTR_RW(bluetooth); 1065 1066/* 1067 * Wimax 1068 */ 1069static int asus_wimax_set(struct asus_laptop *asus, int status) 1070{ 1071 if (write_acpi_int(asus->handle, METHOD_WIMAX, !!status)) { 1072 pr_warn("Error setting wimax status to %d\n", status); 1073 return -EIO; 1074 } 1075 return 0; 1076} 1077 1078static ssize_t wimax_show(struct device *dev, struct device_attribute *attr, 1079 char *buf) 1080{ 1081 struct asus_laptop *asus = dev_get_drvdata(dev); 1082 1083 return sprintf(buf, "%d\n", asus_wireless_status(asus, WM_RSTS)); 1084} 1085 1086static ssize_t wimax_store(struct device *dev, struct device_attribute *attr, 1087 const char *buf, size_t count) 1088{ 1089 struct asus_laptop *asus = dev_get_drvdata(dev); 1090 1091 return sysfs_acpi_set(asus, buf, count, METHOD_WIMAX); 1092} 1093static DEVICE_ATTR_RW(wimax); 1094 1095/* 1096 * Wwan 1097 */ 1098static int asus_wwan_set(struct asus_laptop *asus, int status) 1099{ 1100 if (write_acpi_int(asus->handle, METHOD_WWAN, !!status)) { 1101 pr_warn("Error setting wwan status to %d\n", status); 1102 return -EIO; 1103 } 1104 return 0; 1105} 1106 1107static ssize_t wwan_show(struct device *dev, struct device_attribute *attr, 1108 char *buf) 1109{ 1110 struct asus_laptop *asus = dev_get_drvdata(dev); 1111 1112 return sprintf(buf, "%d\n", asus_wireless_status(asus, WW_RSTS)); 1113} 1114 1115static ssize_t wwan_store(struct device *dev, struct device_attribute *attr, 1116 const char *buf, size_t count) 1117{ 1118 struct asus_laptop *asus = dev_get_drvdata(dev); 1119 1120 return sysfs_acpi_set(asus, buf, count, METHOD_WWAN); 1121} 1122static DEVICE_ATTR_RW(wwan); 1123 1124/* 1125 * Display 1126 */ 1127static void asus_set_display(struct asus_laptop *asus, int value) 1128{ 1129 /* no sanity check needed for now */ 1130 if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value)) 1131 pr_warn("Error setting display\n"); 1132 return; 1133} 1134 1135/* 1136 * Experimental support for display switching. As of now: 1 should activate 1137 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI. 1138 * Any combination (bitwise) of these will suffice. I never actually tested 4 1139 * displays hooked up simultaneously, so be warned. See the acpi4asus README 1140 * for more info. 1141 */ 1142static ssize_t display_store(struct device *dev, struct device_attribute *attr, 1143 const char *buf, size_t count) 1144{ 1145 struct asus_laptop *asus = dev_get_drvdata(dev); 1146 int rv, value; 1147 1148 rv = parse_arg(buf, count, &value); 1149 if (rv > 0) 1150 asus_set_display(asus, value); 1151 return rv; 1152} 1153static DEVICE_ATTR_WO(display); 1154 1155/* 1156 * Light Sens 1157 */ 1158static void asus_als_switch(struct asus_laptop *asus, int value) 1159{ 1160 int ret; 1161 1162 if (asus->is_pega_lucid) { 1163 ret = asus_pega_lucid_set(asus, PEGA_ALS, value); 1164 if (!ret) 1165 ret = asus_pega_lucid_set(asus, PEGA_ALS_POWER, value); 1166 } else { 1167 ret = write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value); 1168 } 1169 if (ret) 1170 pr_warning("Error setting light sensor switch\n"); 1171 1172 asus->light_switch = value; 1173} 1174 1175static ssize_t ls_switch_show(struct device *dev, struct device_attribute *attr, 1176 char *buf) 1177{ 1178 struct asus_laptop *asus = dev_get_drvdata(dev); 1179 1180 return sprintf(buf, "%d\n", asus->light_switch); 1181} 1182 1183static ssize_t ls_switch_store(struct device *dev, 1184 struct device_attribute *attr, const char *buf, 1185 size_t count) 1186{ 1187 struct asus_laptop *asus = dev_get_drvdata(dev); 1188 int rv, value; 1189 1190 rv = parse_arg(buf, count, &value); 1191 if (rv > 0) 1192 asus_als_switch(asus, value ? 1 : 0); 1193 1194 return rv; 1195} 1196static DEVICE_ATTR_RW(ls_switch); 1197 1198static void asus_als_level(struct asus_laptop *asus, int value) 1199{ 1200 if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value)) 1201 pr_warn("Error setting light sensor level\n"); 1202 asus->light_level = value; 1203} 1204 1205static ssize_t ls_level_show(struct device *dev, struct device_attribute *attr, 1206 char *buf) 1207{ 1208 struct asus_laptop *asus = dev_get_drvdata(dev); 1209 1210 return sprintf(buf, "%d\n", asus->light_level); 1211} 1212 1213static ssize_t ls_level_store(struct device *dev, struct device_attribute *attr, 1214 const char *buf, size_t count) 1215{ 1216 struct asus_laptop *asus = dev_get_drvdata(dev); 1217 int rv, value; 1218 1219 rv = parse_arg(buf, count, &value); 1220 if (rv > 0) { 1221 value = (0 < value) ? ((15 < value) ? 15 : value) : 0; 1222 /* 0 <= value <= 15 */ 1223 asus_als_level(asus, value); 1224 } 1225 1226 return rv; 1227} 1228static DEVICE_ATTR_RW(ls_level); 1229 1230static int pega_int_read(struct asus_laptop *asus, int arg, int *result) 1231{ 1232 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 1233 int err = write_acpi_int_ret(asus->handle, METHOD_PEGA_READ, arg, 1234 &buffer); 1235 if (!err) { 1236 union acpi_object *obj = buffer.pointer; 1237 if (obj && obj->type == ACPI_TYPE_INTEGER) 1238 *result = obj->integer.value; 1239 else 1240 err = -EIO; 1241 } 1242 return err; 1243} 1244 1245static ssize_t ls_value_show(struct device *dev, struct device_attribute *attr, 1246 char *buf) 1247{ 1248 struct asus_laptop *asus = dev_get_drvdata(dev); 1249 int err, hi, lo; 1250 1251 err = pega_int_read(asus, PEGA_READ_ALS_H, &hi); 1252 if (!err) 1253 err = pega_int_read(asus, PEGA_READ_ALS_L, &lo); 1254 if (!err) 1255 return sprintf(buf, "%d\n", 10 * hi + lo); 1256 return err; 1257} 1258static DEVICE_ATTR_RO(ls_value); 1259 1260/* 1261 * GPS 1262 */ 1263static int asus_gps_status(struct asus_laptop *asus) 1264{ 1265 unsigned long long status; 1266 acpi_status rv = AE_OK; 1267 1268 rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS, 1269 NULL, &status); 1270 if (ACPI_FAILURE(rv)) { 1271 pr_warn("Error reading GPS status\n"); 1272 return -ENODEV; 1273 } 1274 return !!status; 1275} 1276 1277static int asus_gps_switch(struct asus_laptop *asus, int status) 1278{ 1279 const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF; 1280 1281 if (write_acpi_int(asus->handle, meth, 0x02)) 1282 return -ENODEV; 1283 return 0; 1284} 1285 1286static ssize_t gps_show(struct device *dev, struct device_attribute *attr, 1287 char *buf) 1288{ 1289 struct asus_laptop *asus = dev_get_drvdata(dev); 1290 1291 return sprintf(buf, "%d\n", asus_gps_status(asus)); 1292} 1293 1294static ssize_t gps_store(struct device *dev, struct device_attribute *attr, 1295 const char *buf, size_t count) 1296{ 1297 struct asus_laptop *asus = dev_get_drvdata(dev); 1298 int rv, value; 1299 int ret; 1300 1301 rv = parse_arg(buf, count, &value); 1302 if (rv <= 0) 1303 return -EINVAL; 1304 ret = asus_gps_switch(asus, !!value); 1305 if (ret) 1306 return ret; 1307 rfkill_set_sw_state(asus->gps.rfkill, !value); 1308 return rv; 1309} 1310static DEVICE_ATTR_RW(gps); 1311 1312/* 1313 * rfkill 1314 */ 1315static int asus_gps_rfkill_set(void *data, bool blocked) 1316{ 1317 struct asus_laptop *asus = data; 1318 1319 return asus_gps_switch(asus, !blocked); 1320} 1321 1322static const struct rfkill_ops asus_gps_rfkill_ops = { 1323 .set_block = asus_gps_rfkill_set, 1324}; 1325 1326static int asus_rfkill_set(void *data, bool blocked) 1327{ 1328 struct asus_rfkill *rfk = data; 1329 struct asus_laptop *asus = rfk->asus; 1330 1331 if (rfk->control_id == WL_RSTS) 1332 return asus_wlan_set(asus, !blocked); 1333 else if (rfk->control_id == BT_RSTS) 1334 return asus_bluetooth_set(asus, !blocked); 1335 else if (rfk->control_id == WM_RSTS) 1336 return asus_wimax_set(asus, !blocked); 1337 else if (rfk->control_id == WW_RSTS) 1338 return asus_wwan_set(asus, !blocked); 1339 1340 return -EINVAL; 1341} 1342 1343static const struct rfkill_ops asus_rfkill_ops = { 1344 .set_block = asus_rfkill_set, 1345}; 1346 1347static void asus_rfkill_terminate(struct asus_rfkill *rfk) 1348{ 1349 if (!rfk->rfkill) 1350 return ; 1351 1352 rfkill_unregister(rfk->rfkill); 1353 rfkill_destroy(rfk->rfkill); 1354 rfk->rfkill = NULL; 1355} 1356 1357static void asus_rfkill_exit(struct asus_laptop *asus) 1358{ 1359 asus_rfkill_terminate(&asus->wwan); 1360 asus_rfkill_terminate(&asus->bluetooth); 1361 asus_rfkill_terminate(&asus->wlan); 1362 asus_rfkill_terminate(&asus->gps); 1363} 1364 1365static int asus_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk, 1366 const char *name, int control_id, int type, 1367 const struct rfkill_ops *ops) 1368{ 1369 int result; 1370 1371 rfk->control_id = control_id; 1372 rfk->asus = asus; 1373 rfk->rfkill = rfkill_alloc(name, &asus->platform_device->dev, 1374 type, ops, rfk); 1375 if (!rfk->rfkill) 1376 return -EINVAL; 1377 1378 result = rfkill_register(rfk->rfkill); 1379 if (result) { 1380 rfkill_destroy(rfk->rfkill); 1381 rfk->rfkill = NULL; 1382 } 1383 1384 return result; 1385} 1386 1387static int asus_rfkill_init(struct asus_laptop *asus) 1388{ 1389 int result = 0; 1390 1391 if (asus->is_pega_lucid) 1392 return -ENODEV; 1393 1394 if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) && 1395 !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) && 1396 !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL)) 1397 result = asus_rfkill_setup(asus, &asus->gps, "asus-gps", 1398 -1, RFKILL_TYPE_GPS, 1399 &asus_gps_rfkill_ops); 1400 if (result) 1401 goto exit; 1402 1403 1404 if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL) && 1405 asus->wled_type == TYPE_RFKILL) 1406 result = asus_rfkill_setup(asus, &asus->wlan, "asus-wlan", 1407 WL_RSTS, RFKILL_TYPE_WLAN, 1408 &asus_rfkill_ops); 1409 if (result) 1410 goto exit; 1411 1412 if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL) && 1413 asus->bled_type == TYPE_RFKILL) 1414 result = asus_rfkill_setup(asus, &asus->bluetooth, 1415 "asus-bluetooth", BT_RSTS, 1416 RFKILL_TYPE_BLUETOOTH, 1417 &asus_rfkill_ops); 1418 if (result) 1419 goto exit; 1420 1421 if (!acpi_check_handle(asus->handle, METHOD_WWAN, NULL)) 1422 result = asus_rfkill_setup(asus, &asus->wwan, "asus-wwan", 1423 WW_RSTS, RFKILL_TYPE_WWAN, 1424 &asus_rfkill_ops); 1425 if (result) 1426 goto exit; 1427 1428 if (!acpi_check_handle(asus->handle, METHOD_WIMAX, NULL)) 1429 result = asus_rfkill_setup(asus, &asus->wimax, "asus-wimax", 1430 WM_RSTS, RFKILL_TYPE_WIMAX, 1431 &asus_rfkill_ops); 1432 if (result) 1433 goto exit; 1434 1435exit: 1436 if (result) 1437 asus_rfkill_exit(asus); 1438 1439 return result; 1440} 1441 1442static int pega_rfkill_set(void *data, bool blocked) 1443{ 1444 struct asus_rfkill *rfk = data; 1445 1446 int ret = asus_pega_lucid_set(rfk->asus, rfk->control_id, !blocked); 1447 return ret; 1448} 1449 1450static const struct rfkill_ops pega_rfkill_ops = { 1451 .set_block = pega_rfkill_set, 1452}; 1453 1454static int pega_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk, 1455 const char *name, int controlid, int rfkill_type) 1456{ 1457 return asus_rfkill_setup(asus, rfk, name, controlid, rfkill_type, 1458 &pega_rfkill_ops); 1459} 1460 1461static int pega_rfkill_init(struct asus_laptop *asus) 1462{ 1463 int ret = 0; 1464 1465 if(!asus->is_pega_lucid) 1466 return -ENODEV; 1467 1468 ret = pega_rfkill_setup(asus, &asus->wlan, "pega-wlan", 1469 PEGA_WLAN, RFKILL_TYPE_WLAN); 1470 if(ret) 1471 goto exit; 1472 1473 ret = pega_rfkill_setup(asus, &asus->bluetooth, "pega-bt", 1474 PEGA_BLUETOOTH, RFKILL_TYPE_BLUETOOTH); 1475 if(ret) 1476 goto exit; 1477 1478 ret = pega_rfkill_setup(asus, &asus->wwan, "pega-wwan", 1479 PEGA_WWAN, RFKILL_TYPE_WWAN); 1480 1481exit: 1482 if (ret) 1483 asus_rfkill_exit(asus); 1484 1485 return ret; 1486} 1487 1488/* 1489 * Input device (i.e. hotkeys) 1490 */ 1491static void asus_input_notify(struct asus_laptop *asus, int event) 1492{ 1493 if (!asus->inputdev) 1494 return ; 1495 if (!sparse_keymap_report_event(asus->inputdev, event, 1, true)) 1496 pr_info("Unknown key %x pressed\n", event); 1497} 1498 1499static int asus_input_init(struct asus_laptop *asus) 1500{ 1501 struct input_dev *input; 1502 int error; 1503 1504 input = input_allocate_device(); 1505 if (!input) 1506 return -ENOMEM; 1507 1508 input->name = "Asus Laptop extra buttons"; 1509 input->phys = ASUS_LAPTOP_FILE "/input0"; 1510 input->id.bustype = BUS_HOST; 1511 input->dev.parent = &asus->platform_device->dev; 1512 1513 error = sparse_keymap_setup(input, asus_keymap, NULL); 1514 if (error) { 1515 pr_err("Unable to setup input device keymap\n"); 1516 goto err_free_dev; 1517 } 1518 error = input_register_device(input); 1519 if (error) { 1520 pr_warn("Unable to register input device\n"); 1521 goto err_free_keymap; 1522 } 1523 1524 asus->inputdev = input; 1525 return 0; 1526 1527err_free_keymap: 1528 sparse_keymap_free(input); 1529err_free_dev: 1530 input_free_device(input); 1531 return error; 1532} 1533 1534static void asus_input_exit(struct asus_laptop *asus) 1535{ 1536 if (asus->inputdev) { 1537 sparse_keymap_free(asus->inputdev); 1538 input_unregister_device(asus->inputdev); 1539 } 1540 asus->inputdev = NULL; 1541} 1542 1543/* 1544 * ACPI driver 1545 */ 1546static void asus_acpi_notify(struct acpi_device *device, u32 event) 1547{ 1548 struct asus_laptop *asus = acpi_driver_data(device); 1549 u16 count; 1550 1551 /* TODO Find a better way to handle events count. */ 1552 count = asus->event_count[event % 128]++; 1553 acpi_bus_generate_netlink_event(asus->device->pnp.device_class, 1554 dev_name(&asus->device->dev), event, 1555 count); 1556 1557 if (event >= ATKD_BRNUP_MIN && event <= ATKD_BRNUP_MAX) 1558 event = ATKD_BRNUP; 1559 else if (event >= ATKD_BRNDOWN_MIN && 1560 event <= ATKD_BRNDOWN_MAX) 1561 event = ATKD_BRNDOWN; 1562 1563 /* Brightness events are special */ 1564 if (event == ATKD_BRNDOWN || event == ATKD_BRNUP) { 1565 if (asus->backlight_device != NULL) { 1566 /* Update the backlight device. */ 1567 asus_backlight_notify(asus); 1568 return ; 1569 } 1570 } 1571 1572 /* Accelerometer "coarse orientation change" event */ 1573 if (asus->pega_accel_poll && event == 0xEA) { 1574 kobject_uevent(&asus->pega_accel_poll->input->dev.kobj, 1575 KOBJ_CHANGE); 1576 return ; 1577 } 1578 1579 asus_input_notify(asus, event); 1580} 1581 1582static struct attribute *asus_attributes[] = { 1583 &dev_attr_infos.attr, 1584 &dev_attr_wlan.attr, 1585 &dev_attr_bluetooth.attr, 1586 &dev_attr_wimax.attr, 1587 &dev_attr_wwan.attr, 1588 &dev_attr_display.attr, 1589 &dev_attr_ledd.attr, 1590 &dev_attr_ls_value.attr, 1591 &dev_attr_ls_level.attr, 1592 &dev_attr_ls_switch.attr, 1593 &dev_attr_gps.attr, 1594 NULL 1595}; 1596 1597static umode_t asus_sysfs_is_visible(struct kobject *kobj, 1598 struct attribute *attr, 1599 int idx) 1600{ 1601 struct device *dev = container_of(kobj, struct device, kobj); 1602 struct platform_device *pdev = to_platform_device(dev); 1603 struct asus_laptop *asus = platform_get_drvdata(pdev); 1604 acpi_handle handle = asus->handle; 1605 bool supported; 1606 1607 if (asus->is_pega_lucid) { 1608 /* no ls_level interface on the Lucid */ 1609 if (attr == &dev_attr_ls_switch.attr) 1610 supported = true; 1611 else if (attr == &dev_attr_ls_level.attr) 1612 supported = false; 1613 else 1614 goto normal; 1615 1616 return supported ? attr->mode : 0; 1617 } 1618 1619normal: 1620 if (attr == &dev_attr_wlan.attr) { 1621 supported = !acpi_check_handle(handle, METHOD_WLAN, NULL); 1622 1623 } else if (attr == &dev_attr_bluetooth.attr) { 1624 supported = !acpi_check_handle(handle, METHOD_BLUETOOTH, NULL); 1625 1626 } else if (attr == &dev_attr_display.attr) { 1627 supported = !acpi_check_handle(handle, METHOD_SWITCH_DISPLAY, NULL); 1628 1629 } else if (attr == &dev_attr_wimax.attr) { 1630 supported = 1631 !acpi_check_handle(asus->handle, METHOD_WIMAX, NULL); 1632 1633 } else if (attr == &dev_attr_wwan.attr) { 1634 supported = !acpi_check_handle(asus->handle, METHOD_WWAN, NULL); 1635 1636 } else if (attr == &dev_attr_ledd.attr) { 1637 supported = !acpi_check_handle(handle, METHOD_LEDD, NULL); 1638 1639 } else if (attr == &dev_attr_ls_switch.attr || 1640 attr == &dev_attr_ls_level.attr) { 1641 supported = !acpi_check_handle(handle, METHOD_ALS_CONTROL, NULL) && 1642 !acpi_check_handle(handle, METHOD_ALS_LEVEL, NULL); 1643 } else if (attr == &dev_attr_ls_value.attr) { 1644 supported = asus->is_pega_lucid; 1645 } else if (attr == &dev_attr_gps.attr) { 1646 supported = !acpi_check_handle(handle, METHOD_GPS_ON, NULL) && 1647 !acpi_check_handle(handle, METHOD_GPS_OFF, NULL) && 1648 !acpi_check_handle(handle, METHOD_GPS_STATUS, NULL); 1649 } else { 1650 supported = true; 1651 } 1652 1653 return supported ? attr->mode : 0; 1654} 1655 1656 1657static const struct attribute_group asus_attr_group = { 1658 .is_visible = asus_sysfs_is_visible, 1659 .attrs = asus_attributes, 1660}; 1661 1662static int asus_platform_init(struct asus_laptop *asus) 1663{ 1664 int result; 1665 1666 asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1); 1667 if (!asus->platform_device) 1668 return -ENOMEM; 1669 platform_set_drvdata(asus->platform_device, asus); 1670 1671 result = platform_device_add(asus->platform_device); 1672 if (result) 1673 goto fail_platform_device; 1674 1675 result = sysfs_create_group(&asus->platform_device->dev.kobj, 1676 &asus_attr_group); 1677 if (result) 1678 goto fail_sysfs; 1679 1680 return 0; 1681 1682fail_sysfs: 1683 platform_device_del(asus->platform_device); 1684fail_platform_device: 1685 platform_device_put(asus->platform_device); 1686 return result; 1687} 1688 1689static void asus_platform_exit(struct asus_laptop *asus) 1690{ 1691 sysfs_remove_group(&asus->platform_device->dev.kobj, &asus_attr_group); 1692 platform_device_unregister(asus->platform_device); 1693} 1694 1695static struct platform_driver platform_driver = { 1696 .driver = { 1697 .name = ASUS_LAPTOP_FILE, 1698 }, 1699}; 1700 1701/* 1702 * This function is used to initialize the context with right values. In this 1703 * method, we can make all the detection we want, and modify the asus_laptop 1704 * struct 1705 */ 1706static int asus_laptop_get_info(struct asus_laptop *asus) 1707{ 1708 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 1709 union acpi_object *model = NULL; 1710 unsigned long long bsts_result; 1711 char *string = NULL; 1712 acpi_status status; 1713 1714 /* 1715 * Get DSDT headers early enough to allow for differentiating between 1716 * models, but late enough to allow acpi_bus_register_driver() to fail 1717 * before doing anything ACPI-specific. Should we encounter a machine, 1718 * which needs special handling (i.e. its hotkey device has a different 1719 * HID), this bit will be moved. 1720 */ 1721 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info); 1722 if (ACPI_FAILURE(status)) 1723 pr_warn("Couldn't get the DSDT table header\n"); 1724 1725 /* We have to write 0 on init this far for all ASUS models */ 1726 if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) { 1727 pr_err("Hotkey initialization failed\n"); 1728 return -ENODEV; 1729 } 1730 1731 /* This needs to be called for some laptops to init properly */ 1732 status = 1733 acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result); 1734 if (ACPI_FAILURE(status)) 1735 pr_warn("Error calling BSTS\n"); 1736 else if (bsts_result) 1737 pr_notice("BSTS called, 0x%02x returned\n", 1738 (uint) bsts_result); 1739 1740 /* This too ... */ 1741 if (write_acpi_int(asus->handle, "CWAP", wapf)) 1742 pr_err("Error calling CWAP(%d)\n", wapf); 1743 /* 1744 * Try to match the object returned by INIT to the specific model. 1745 * Handle every possible object (or the lack of thereof) the DSDT 1746 * writers might throw at us. When in trouble, we pass NULL to 1747 * asus_model_match() and try something completely different. 1748 */ 1749 if (buffer.pointer) { 1750 model = buffer.pointer; 1751 switch (model->type) { 1752 case ACPI_TYPE_STRING: 1753 string = model->string.pointer; 1754 break; 1755 case ACPI_TYPE_BUFFER: 1756 string = model->buffer.pointer; 1757 break; 1758 default: 1759 string = ""; 1760 break; 1761 } 1762 } 1763 asus->name = kstrdup(string, GFP_KERNEL); 1764 if (!asus->name) { 1765 kfree(buffer.pointer); 1766 return -ENOMEM; 1767 } 1768 1769 if (string) 1770 pr_notice(" %s model detected\n", string); 1771 1772 if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL)) 1773 asus->have_rsts = true; 1774 1775 kfree(model); 1776 1777 return AE_OK; 1778} 1779 1780static int asus_acpi_init(struct asus_laptop *asus) 1781{ 1782 int result = 0; 1783 1784 result = acpi_bus_get_status(asus->device); 1785 if (result) 1786 return result; 1787 if (!asus->device->status.present) { 1788 pr_err("Hotkey device not present, aborting\n"); 1789 return -ENODEV; 1790 } 1791 1792 result = asus_laptop_get_info(asus); 1793 if (result) 1794 return result; 1795 1796 if (!strcmp(bled_type, "led")) 1797 asus->bled_type = TYPE_LED; 1798 else if (!strcmp(bled_type, "rfkill")) 1799 asus->bled_type = TYPE_RFKILL; 1800 1801 if (!strcmp(wled_type, "led")) 1802 asus->wled_type = TYPE_LED; 1803 else if (!strcmp(wled_type, "rfkill")) 1804 asus->wled_type = TYPE_RFKILL; 1805 1806 if (bluetooth_status >= 0) 1807 asus_bluetooth_set(asus, !!bluetooth_status); 1808 1809 if (wlan_status >= 0) 1810 asus_wlan_set(asus, !!wlan_status); 1811 1812 if (wimax_status >= 0) 1813 asus_wimax_set(asus, !!wimax_status); 1814 1815 if (wwan_status >= 0) 1816 asus_wwan_set(asus, !!wwan_status); 1817 1818 /* Keyboard Backlight is on by default */ 1819 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL)) 1820 asus_kled_set(asus, 1); 1821 1822 /* LED display is off by default */ 1823 asus->ledd_status = 0xFFF; 1824 1825 /* Set initial values of light sensor and level */ 1826 asus->light_switch = !!als_status; 1827 asus->light_level = 5; /* level 5 for sensor sensitivity */ 1828 1829 if (asus->is_pega_lucid) { 1830 asus_als_switch(asus, asus->light_switch); 1831 } else if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) && 1832 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) { 1833 asus_als_switch(asus, asus->light_switch); 1834 asus_als_level(asus, asus->light_level); 1835 } 1836 1837 return result; 1838} 1839 1840static void asus_dmi_check(void) 1841{ 1842 const char *model; 1843 1844 model = dmi_get_system_info(DMI_PRODUCT_NAME); 1845 if (!model) 1846 return; 1847 1848 /* On L1400B WLED control the sound card, don't mess with it ... */ 1849 if (strncmp(model, "L1400B", 6) == 0) { 1850 wlan_status = -1; 1851 } 1852} 1853 1854static bool asus_device_present; 1855 1856static int asus_acpi_add(struct acpi_device *device) 1857{ 1858 struct asus_laptop *asus; 1859 int result; 1860 1861 pr_notice("Asus Laptop Support version %s\n", 1862 ASUS_LAPTOP_VERSION); 1863 asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL); 1864 if (!asus) 1865 return -ENOMEM; 1866 asus->handle = device->handle; 1867 strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME); 1868 strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS); 1869 device->driver_data = asus; 1870 asus->device = device; 1871 1872 asus_dmi_check(); 1873 1874 result = asus_acpi_init(asus); 1875 if (result) 1876 goto fail_platform; 1877 1878 /* 1879 * Need platform type detection first, then the platform 1880 * device. It is used as a parent for the sub-devices below. 1881 */ 1882 asus->is_pega_lucid = asus_check_pega_lucid(asus); 1883 result = asus_platform_init(asus); 1884 if (result) 1885 goto fail_platform; 1886 1887 if (!acpi_video_backlight_support()) { 1888 result = asus_backlight_init(asus); 1889 if (result) 1890 goto fail_backlight; 1891 } else 1892 pr_info("Backlight controlled by ACPI video driver\n"); 1893 1894 result = asus_input_init(asus); 1895 if (result) 1896 goto fail_input; 1897 1898 result = asus_led_init(asus); 1899 if (result) 1900 goto fail_led; 1901 1902 result = asus_rfkill_init(asus); 1903 if (result && result != -ENODEV) 1904 goto fail_rfkill; 1905 1906 result = pega_accel_init(asus); 1907 if (result && result != -ENODEV) 1908 goto fail_pega_accel; 1909 1910 result = pega_rfkill_init(asus); 1911 if (result && result != -ENODEV) 1912 goto fail_pega_rfkill; 1913 1914 asus_device_present = true; 1915 return 0; 1916 1917fail_pega_rfkill: 1918 pega_accel_exit(asus); 1919fail_pega_accel: 1920 asus_rfkill_exit(asus); 1921fail_rfkill: 1922 asus_led_exit(asus); 1923fail_led: 1924 asus_input_exit(asus); 1925fail_input: 1926 asus_backlight_exit(asus); 1927fail_backlight: 1928 asus_platform_exit(asus); 1929fail_platform: 1930 kfree(asus); 1931 1932 return result; 1933} 1934 1935static int asus_acpi_remove(struct acpi_device *device) 1936{ 1937 struct asus_laptop *asus = acpi_driver_data(device); 1938 1939 asus_backlight_exit(asus); 1940 asus_rfkill_exit(asus); 1941 asus_led_exit(asus); 1942 asus_input_exit(asus); 1943 pega_accel_exit(asus); 1944 asus_platform_exit(asus); 1945 1946 kfree(asus->name); 1947 kfree(asus); 1948 return 0; 1949} 1950 1951static const struct acpi_device_id asus_device_ids[] = { 1952 {"ATK0100", 0}, 1953 {"ATK0101", 0}, 1954 {"", 0}, 1955}; 1956MODULE_DEVICE_TABLE(acpi, asus_device_ids); 1957 1958static struct acpi_driver asus_acpi_driver = { 1959 .name = ASUS_LAPTOP_NAME, 1960 .class = ASUS_LAPTOP_CLASS, 1961 .owner = THIS_MODULE, 1962 .ids = asus_device_ids, 1963 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, 1964 .ops = { 1965 .add = asus_acpi_add, 1966 .remove = asus_acpi_remove, 1967 .notify = asus_acpi_notify, 1968 }, 1969}; 1970 1971static int __init asus_laptop_init(void) 1972{ 1973 int result; 1974 1975 result = platform_driver_register(&platform_driver); 1976 if (result < 0) 1977 return result; 1978 1979 result = acpi_bus_register_driver(&asus_acpi_driver); 1980 if (result < 0) 1981 goto fail_acpi_driver; 1982 if (!asus_device_present) { 1983 result = -ENODEV; 1984 goto fail_no_device; 1985 } 1986 return 0; 1987 1988fail_no_device: 1989 acpi_bus_unregister_driver(&asus_acpi_driver); 1990fail_acpi_driver: 1991 platform_driver_unregister(&platform_driver); 1992 return result; 1993} 1994 1995static void __exit asus_laptop_exit(void) 1996{ 1997 acpi_bus_unregister_driver(&asus_acpi_driver); 1998 platform_driver_unregister(&platform_driver); 1999} 2000 2001module_init(asus_laptop_init); 2002module_exit(asus_laptop_exit); 2003