1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * asus-laptop.c - Asus Laptop Support 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 * The development page for this driver is located at 10 * http://sourceforge.net/projects/acpi4asus/ 11 * 12 * Credits: 13 * Pontus Fuchs - Helper functions, cleanup 14 * Johann Wiesner - Small compile fixes 15 * John Belmonte - ACPI code for Toshiba laptop was a good starting point. 16 * Eric Burghard - LED display support for W1N 17 * Josh Green - Light Sens support 18 * Thomas Tuttle - His first patch for led support was very helpful 19 * Sam Lin - GPS support 20 */ 21 22 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 23 24 #include <linux/kernel.h> 25 #include <linux/module.h> 26 #include <linux/init.h> 27 #include <linux/types.h> 28 #include <linux/err.h> 29 #include <linux/proc_fs.h> 30 #include <linux/backlight.h> 31 #include <linux/fb.h> 32 #include <linux/leds.h> 33 #include <linux/platform_device.h> 34 #include <linux/uaccess.h> 35 #include <linux/input.h> 36 #include <linux/input/sparse-keymap.h> 37 #include <linux/rfkill.h> 38 #include <linux/slab.h> 39 #include <linux/dmi.h> 40 #include <linux/acpi.h> 41 #include <acpi/video.h> 42 43 #define ASUS_LAPTOP_VERSION "0.42" 44 45 #define ASUS_LAPTOP_NAME "Asus Laptop Support" 46 #define ASUS_LAPTOP_CLASS "hotkey" 47 #define ASUS_LAPTOP_DEVICE_NAME "Hotkey" 48 #define ASUS_LAPTOP_FILE KBUILD_MODNAME 49 #define ASUS_LAPTOP_PREFIX "\\_SB.ATKD." 50 51 MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary"); 52 MODULE_DESCRIPTION(ASUS_LAPTOP_NAME); 53 MODULE_LICENSE("GPL"); 54 55 /* 56 * WAPF defines the behavior of the Fn+Fx wlan key 57 * The significance of values is yet to be found, but 58 * most of the time: 59 * Bit | Bluetooth | WLAN 60 * 0 | Hardware | Hardware 61 * 1 | Hardware | Software 62 * 4 | Software | Software 63 */ 64 static uint wapf = 1; 65 module_param(wapf, uint, 0444); 66 MODULE_PARM_DESC(wapf, "WAPF value"); 67 68 static char *wled_type = "unknown"; 69 static char *bled_type = "unknown"; 70 71 module_param(wled_type, charp, 0444); 72 MODULE_PARM_DESC(wled_type, "Set the wled type on boot " 73 "(unknown, led or rfkill). " 74 "default is unknown"); 75 76 module_param(bled_type, charp, 0444); 77 MODULE_PARM_DESC(bled_type, "Set the bled type on boot " 78 "(unknown, led or rfkill). " 79 "default is unknown"); 80 81 static int wlan_status = 1; 82 static int bluetooth_status = 1; 83 static int wimax_status = -1; 84 static int wwan_status = -1; 85 static int als_status; 86 87 module_param(wlan_status, int, 0444); 88 MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot " 89 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 90 "default is -1"); 91 92 module_param(bluetooth_status, int, 0444); 93 MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot " 94 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 95 "default is -1"); 96 97 module_param(wimax_status, int, 0444); 98 MODULE_PARM_DESC(wimax_status, "Set the wireless status on boot " 99 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 100 "default is -1"); 101 102 module_param(wwan_status, int, 0444); 103 MODULE_PARM_DESC(wwan_status, "Set the wireless status on boot " 104 "(0 = disabled, 1 = enabled, -1 = don't do anything). " 105 "default is -1"); 106 107 module_param(als_status, int, 0444); 108 MODULE_PARM_DESC(als_status, "Set the ALS status on boot " 109 "(0 = disabled, 1 = enabled). " 110 "default is 0"); 111 112 /* 113 * Some events we use, same for all Asus 114 */ 115 #define ATKD_BRNUP_MIN 0x10 116 #define ATKD_BRNUP_MAX 0x1f 117 #define ATKD_BRNDOWN_MIN 0x20 118 #define ATKD_BRNDOWN_MAX 0x2f 119 #define ATKD_BRNDOWN 0x20 120 #define ATKD_BRNUP 0x2f 121 #define ATKD_LCD_ON 0x33 122 #define ATKD_LCD_OFF 0x34 123 124 /* 125 * Known bits returned by \_SB.ATKD.HWRS 126 */ 127 #define WL_HWRS 0x80 128 #define BT_HWRS 0x100 129 130 /* 131 * Flags for hotk status 132 * WL_ON and BT_ON are also used for wireless_status() 133 */ 134 #define WL_RSTS 0x01 /* internal Wifi */ 135 #define BT_RSTS 0x02 /* internal Bluetooth */ 136 #define WM_RSTS 0x08 /* internal wimax */ 137 #define WW_RSTS 0x20 /* internal wwan */ 138 139 /* WLED and BLED type */ 140 #define TYPE_UNKNOWN 0 141 #define TYPE_LED 1 142 #define TYPE_RFKILL 2 143 144 /* LED */ 145 #define METHOD_MLED "MLED" 146 #define METHOD_TLED "TLED" 147 #define METHOD_RLED "RLED" /* W1JC */ 148 #define METHOD_PLED "PLED" /* A7J */ 149 #define METHOD_GLED "GLED" /* G1, G2 (probably) */ 150 151 /* LEDD */ 152 #define METHOD_LEDD "SLCM" 153 154 /* 155 * Bluetooth and WLAN 156 * WLED and BLED are not handled like other XLED, because in some dsdt 157 * they also control the WLAN/Bluetooth device. 158 */ 159 #define METHOD_WLAN "WLED" 160 #define METHOD_BLUETOOTH "BLED" 161 162 /* WWAN and WIMAX */ 163 #define METHOD_WWAN "GSMC" 164 #define METHOD_WIMAX "WMXC" 165 166 #define METHOD_WL_STATUS "RSTS" 167 168 /* Brightness */ 169 #define METHOD_BRIGHTNESS_SET "SPLV" 170 #define METHOD_BRIGHTNESS_GET "GPLV" 171 172 /* Display */ 173 #define METHOD_SWITCH_DISPLAY "SDSP" 174 175 #define METHOD_ALS_CONTROL "ALSC" /* Z71A Z71V */ 176 #define METHOD_ALS_LEVEL "ALSL" /* Z71A Z71V */ 177 178 /* GPS */ 179 /* R2H use different handle for GPS on/off */ 180 #define METHOD_GPS_ON "SDON" 181 #define METHOD_GPS_OFF "SDOF" 182 #define METHOD_GPS_STATUS "GPST" 183 184 /* Keyboard light */ 185 #define METHOD_KBD_LIGHT_SET "SLKB" 186 #define METHOD_KBD_LIGHT_GET "GLKB" 187 188 /* For Pegatron Lucid tablet */ 189 #define DEVICE_NAME_PEGA "Lucid" 190 191 #define METHOD_PEGA_ENABLE "ENPR" 192 #define METHOD_PEGA_DISABLE "DAPR" 193 #define PEGA_WLAN 0x00 194 #define PEGA_BLUETOOTH 0x01 195 #define PEGA_WWAN 0x02 196 #define PEGA_ALS 0x04 197 #define PEGA_ALS_POWER 0x05 198 199 #define METHOD_PEGA_READ "RDLN" 200 #define PEGA_READ_ALS_H 0x02 201 #define PEGA_READ_ALS_L 0x03 202 203 #define PEGA_ACCEL_NAME "pega_accel" 204 #define PEGA_ACCEL_DESC "Pegatron Lucid Tablet Accelerometer" 205 #define METHOD_XLRX "XLRX" 206 #define METHOD_XLRY "XLRY" 207 #define METHOD_XLRZ "XLRZ" 208 #define PEGA_ACC_CLAMP 512 /* 1G accel is reported as ~256, so clamp to 2G */ 209 #define PEGA_ACC_RETRIES 3 210 211 /* 212 * Define a specific led structure to keep the main structure clean 213 */ 214 struct asus_led { 215 int wk; 216 struct work_struct work; 217 struct led_classdev led; 218 struct asus_laptop *asus; 219 const char *method; 220 }; 221 222 /* 223 * Same thing for rfkill 224 */ 225 struct asus_rfkill { 226 /* type of control. Maps to PEGA_* values or *_RSTS */ 227 int control_id; 228 struct rfkill *rfkill; 229 struct asus_laptop *asus; 230 }; 231 232 /* 233 * This is the main structure, we can use it to store anything interesting 234 * about the hotk device 235 */ 236 struct asus_laptop { 237 char *name; /* laptop name */ 238 239 struct acpi_table_header *dsdt_info; 240 struct platform_device *platform_device; 241 struct acpi_device *device; /* the device we are in */ 242 struct backlight_device *backlight_device; 243 244 struct input_dev *inputdev; 245 struct key_entry *keymap; 246 struct input_dev *pega_accel_poll; 247 248 struct asus_led wled; 249 struct asus_led bled; 250 struct asus_led mled; 251 struct asus_led tled; 252 struct asus_led rled; 253 struct asus_led pled; 254 struct asus_led gled; 255 struct asus_led kled; 256 struct workqueue_struct *led_workqueue; 257 258 int wled_type; 259 int bled_type; 260 int wireless_status; 261 bool have_rsts; 262 bool is_pega_lucid; 263 bool pega_acc_live; 264 int pega_acc_x; 265 int pega_acc_y; 266 int pega_acc_z; 267 268 struct asus_rfkill wlan; 269 struct asus_rfkill bluetooth; 270 struct asus_rfkill wwan; 271 struct asus_rfkill wimax; 272 struct asus_rfkill gps; 273 274 acpi_handle handle; /* the handle of the hotk device */ 275 u32 ledd_status; /* status of the LED display */ 276 u8 light_level; /* light sensor level */ 277 u8 light_switch; /* light sensor switch value */ 278 u16 event_count[128]; /* count for each event TODO make this better */ 279 }; 280 281 static const struct key_entry asus_keymap[] = { 282 /* Lenovo SL Specific keycodes */ 283 {KE_KEY, 0x02, { KEY_SCREENLOCK } }, 284 {KE_KEY, 0x05, { KEY_WLAN } }, 285 {KE_KEY, 0x08, { KEY_F13 } }, 286 {KE_KEY, 0x09, { KEY_PROG2 } }, /* Dock */ 287 {KE_KEY, 0x17, { KEY_ZOOM } }, 288 {KE_KEY, 0x1f, { KEY_BATTERY } }, 289 /* End of Lenovo SL Specific keycodes */ 290 {KE_KEY, ATKD_BRNDOWN, { KEY_BRIGHTNESSDOWN } }, 291 {KE_KEY, ATKD_BRNUP, { KEY_BRIGHTNESSUP } }, 292 {KE_KEY, 0x30, { KEY_VOLUMEUP } }, 293 {KE_KEY, 0x31, { KEY_VOLUMEDOWN } }, 294 {KE_KEY, 0x32, { KEY_MUTE } }, 295 {KE_KEY, 0x33, { KEY_DISPLAYTOGGLE } }, /* LCD on */ 296 {KE_KEY, 0x34, { KEY_DISPLAY_OFF } }, /* LCD off */ 297 {KE_KEY, 0x40, { KEY_PREVIOUSSONG } }, 298 {KE_KEY, 0x41, { KEY_NEXTSONG } }, 299 {KE_KEY, 0x43, { KEY_STOPCD } }, /* Stop/Eject */ 300 {KE_KEY, 0x45, { KEY_PLAYPAUSE } }, 301 {KE_KEY, 0x4c, { KEY_MEDIA } }, /* WMP Key */ 302 {KE_KEY, 0x50, { KEY_EMAIL } }, 303 {KE_KEY, 0x51, { KEY_WWW } }, 304 {KE_KEY, 0x55, { KEY_CALC } }, 305 {KE_IGNORE, 0x57, }, /* Battery mode */ 306 {KE_IGNORE, 0x58, }, /* AC mode */ 307 {KE_KEY, 0x5C, { KEY_SCREENLOCK } }, /* Screenlock */ 308 {KE_KEY, 0x5D, { KEY_WLAN } }, /* WLAN Toggle */ 309 {KE_KEY, 0x5E, { KEY_WLAN } }, /* WLAN Enable */ 310 {KE_KEY, 0x5F, { KEY_WLAN } }, /* WLAN Disable */ 311 {KE_KEY, 0x60, { KEY_TOUCHPAD_ON } }, 312 {KE_KEY, 0x61, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD only */ 313 {KE_KEY, 0x62, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT only */ 314 {KE_KEY, 0x63, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT */ 315 {KE_KEY, 0x64, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV */ 316 {KE_KEY, 0x65, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV */ 317 {KE_KEY, 0x66, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV */ 318 {KE_KEY, 0x67, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV */ 319 {KE_KEY, 0x6A, { KEY_TOUCHPAD_TOGGLE } }, /* Lock Touchpad Fn + F9 */ 320 {KE_KEY, 0x6B, { KEY_TOUCHPAD_TOGGLE } }, /* Lock Touchpad */ 321 {KE_KEY, 0x6C, { KEY_SLEEP } }, /* Suspend */ 322 {KE_KEY, 0x6D, { KEY_SLEEP } }, /* Hibernate */ 323 {KE_IGNORE, 0x6E, }, /* Low Battery notification */ 324 {KE_KEY, 0x7D, { KEY_BLUETOOTH } }, /* Bluetooth Enable */ 325 {KE_KEY, 0x7E, { KEY_BLUETOOTH } }, /* Bluetooth Disable */ 326 {KE_KEY, 0x82, { KEY_CAMERA } }, 327 {KE_KEY, 0x88, { KEY_RFKILL } }, /* Radio Toggle Key */ 328 {KE_KEY, 0x8A, { KEY_PROG1 } }, /* Color enhancement mode */ 329 {KE_KEY, 0x8C, { KEY_SWITCHVIDEOMODE } }, /* SDSP DVI only */ 330 {KE_KEY, 0x8D, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + DVI */ 331 {KE_KEY, 0x8E, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + DVI */ 332 {KE_KEY, 0x8F, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV + DVI */ 333 {KE_KEY, 0x90, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + DVI */ 334 {KE_KEY, 0x91, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV + DVI */ 335 {KE_KEY, 0x92, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV + DVI */ 336 {KE_KEY, 0x93, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV + DVI */ 337 {KE_KEY, 0x95, { KEY_MEDIA } }, 338 {KE_KEY, 0x99, { KEY_PHONE } }, 339 {KE_KEY, 0xA0, { KEY_SWITCHVIDEOMODE } }, /* SDSP HDMI only */ 340 {KE_KEY, 0xA1, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + HDMI */ 341 {KE_KEY, 0xA2, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + HDMI */ 342 {KE_KEY, 0xA3, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV + HDMI */ 343 {KE_KEY, 0xA4, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + HDMI */ 344 {KE_KEY, 0xA5, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV + HDMI */ 345 {KE_KEY, 0xA6, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV + HDMI */ 346 {KE_KEY, 0xA7, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV + HDMI */ 347 {KE_KEY, 0xB5, { KEY_CALC } }, 348 {KE_KEY, 0xC4, { KEY_KBDILLUMUP } }, 349 {KE_KEY, 0xC5, { KEY_KBDILLUMDOWN } }, 350 {KE_END, 0}, 351 }; 352 353 354 /* 355 * This function evaluates an ACPI method, given an int as parameter, the 356 * method is searched within the scope of the handle, can be NULL. The output 357 * of the method is written is output, which can also be NULL 358 * 359 * returns 0 if write is successful, -1 else. 360 */ 361 static int write_acpi_int_ret(acpi_handle handle, const char *method, int val, 362 struct acpi_buffer *output) 363 { 364 struct acpi_object_list params; /* list of input parameters (an int) */ 365 union acpi_object in_obj; /* the only param we use */ 366 acpi_status status; 367 368 if (!handle) 369 return -1; 370 371 params.count = 1; 372 params.pointer = &in_obj; 373 in_obj.type = ACPI_TYPE_INTEGER; 374 in_obj.integer.value = val; 375 376 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); 377 if (status == AE_OK) 378 return 0; 379 else 380 return -1; 381 } 382 383 static int write_acpi_int(acpi_handle handle, const char *method, int val) 384 { 385 return write_acpi_int_ret(handle, method, val, NULL); 386 } 387 388 static int acpi_check_handle(acpi_handle handle, const char *method, 389 acpi_handle *ret) 390 { 391 acpi_status status; 392 393 if (method == NULL) 394 return -ENODEV; 395 396 if (ret) 397 status = acpi_get_handle(handle, (char *)method, 398 ret); 399 else { 400 acpi_handle dummy; 401 402 status = acpi_get_handle(handle, (char *)method, 403 &dummy); 404 } 405 406 if (status != AE_OK) { 407 if (ret) 408 pr_warn("Error finding %s\n", method); 409 return -ENODEV; 410 } 411 return 0; 412 } 413 414 static bool asus_check_pega_lucid(struct asus_laptop *asus) 415 { 416 return !strcmp(asus->name, DEVICE_NAME_PEGA) && 417 !acpi_check_handle(asus->handle, METHOD_PEGA_ENABLE, NULL) && 418 !acpi_check_handle(asus->handle, METHOD_PEGA_DISABLE, NULL) && 419 !acpi_check_handle(asus->handle, METHOD_PEGA_READ, NULL); 420 } 421 422 static int asus_pega_lucid_set(struct asus_laptop *asus, int unit, bool enable) 423 { 424 char *method = enable ? METHOD_PEGA_ENABLE : METHOD_PEGA_DISABLE; 425 return write_acpi_int(asus->handle, method, unit); 426 } 427 428 static int pega_acc_axis(struct asus_laptop *asus, int curr, char *method) 429 { 430 int i, delta; 431 unsigned long long val; 432 for (i = 0; i < PEGA_ACC_RETRIES; i++) { 433 acpi_evaluate_integer(asus->handle, method, NULL, &val); 434 435 /* The output is noisy. From reading the ASL 436 * dissassembly, timeout errors are returned with 1's 437 * in the high word, and the lack of locking around 438 * thei hi/lo byte reads means that a transition 439 * between (for example) -1 and 0 could be read as 440 * 0xff00 or 0x00ff. */ 441 delta = abs(curr - (short)val); 442 if (delta < 128 && !(val & ~0xffff)) 443 break; 444 } 445 return clamp_val((short)val, -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP); 446 } 447 448 static void pega_accel_poll(struct input_dev *input) 449 { 450 struct device *parent = input->dev.parent; 451 struct asus_laptop *asus = dev_get_drvdata(parent); 452 453 /* In some cases, the very first call to poll causes a 454 * recursive fault under the polldev worker. This is 455 * apparently related to very early userspace access to the 456 * device, and perhaps a firmware bug. Fake the first report. */ 457 if (!asus->pega_acc_live) { 458 asus->pega_acc_live = true; 459 input_report_abs(input, ABS_X, 0); 460 input_report_abs(input, ABS_Y, 0); 461 input_report_abs(input, ABS_Z, 0); 462 input_sync(input); 463 return; 464 } 465 466 asus->pega_acc_x = pega_acc_axis(asus, asus->pega_acc_x, METHOD_XLRX); 467 asus->pega_acc_y = pega_acc_axis(asus, asus->pega_acc_y, METHOD_XLRY); 468 asus->pega_acc_z = pega_acc_axis(asus, asus->pega_acc_z, METHOD_XLRZ); 469 470 /* Note transform, convert to "right/up/out" in the native 471 * landscape orientation (i.e. the vector is the direction of 472 * "real up" in the device's cartiesian coordinates). */ 473 input_report_abs(input, ABS_X, -asus->pega_acc_x); 474 input_report_abs(input, ABS_Y, -asus->pega_acc_y); 475 input_report_abs(input, ABS_Z, asus->pega_acc_z); 476 input_sync(input); 477 } 478 479 static void pega_accel_exit(struct asus_laptop *asus) 480 { 481 if (asus->pega_accel_poll) { 482 input_unregister_device(asus->pega_accel_poll); 483 asus->pega_accel_poll = NULL; 484 } 485 } 486 487 static int pega_accel_init(struct asus_laptop *asus) 488 { 489 int err; 490 struct input_dev *input; 491 492 if (!asus->is_pega_lucid) 493 return -ENODEV; 494 495 if (acpi_check_handle(asus->handle, METHOD_XLRX, NULL) || 496 acpi_check_handle(asus->handle, METHOD_XLRY, NULL) || 497 acpi_check_handle(asus->handle, METHOD_XLRZ, NULL)) 498 return -ENODEV; 499 500 input = input_allocate_device(); 501 if (!input) 502 return -ENOMEM; 503 504 input->name = PEGA_ACCEL_DESC; 505 input->phys = PEGA_ACCEL_NAME "/input0"; 506 input->dev.parent = &asus->platform_device->dev; 507 input->id.bustype = BUS_HOST; 508 509 input_set_abs_params(input, ABS_X, 510 -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0); 511 input_set_abs_params(input, ABS_Y, 512 -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0); 513 input_set_abs_params(input, ABS_Z, 514 -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0); 515 516 err = input_setup_polling(input, pega_accel_poll); 517 if (err) 518 goto exit; 519 520 input_set_poll_interval(input, 125); 521 input_set_min_poll_interval(input, 50); 522 input_set_max_poll_interval(input, 2000); 523 524 err = input_register_device(input); 525 if (err) 526 goto exit; 527 528 asus->pega_accel_poll = input; 529 return 0; 530 531 exit: 532 input_free_device(input); 533 return err; 534 } 535 536 /* Generic LED function */ 537 static int asus_led_set(struct asus_laptop *asus, const char *method, 538 int value) 539 { 540 if (!strcmp(method, METHOD_MLED)) 541 value = !value; 542 else if (!strcmp(method, METHOD_GLED)) 543 value = !value + 1; 544 else 545 value = !!value; 546 547 return write_acpi_int(asus->handle, method, value); 548 } 549 550 /* 551 * LEDs 552 */ 553 /* /sys/class/led handlers */ 554 static void asus_led_cdev_set(struct led_classdev *led_cdev, 555 enum led_brightness value) 556 { 557 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 558 struct asus_laptop *asus = led->asus; 559 560 led->wk = !!value; 561 queue_work(asus->led_workqueue, &led->work); 562 } 563 564 static void asus_led_cdev_update(struct work_struct *work) 565 { 566 struct asus_led *led = container_of(work, struct asus_led, work); 567 struct asus_laptop *asus = led->asus; 568 569 asus_led_set(asus, led->method, led->wk); 570 } 571 572 static enum led_brightness asus_led_cdev_get(struct led_classdev *led_cdev) 573 { 574 return led_cdev->brightness; 575 } 576 577 /* 578 * Keyboard backlight (also a LED) 579 */ 580 static int asus_kled_lvl(struct asus_laptop *asus) 581 { 582 unsigned long long kblv; 583 struct acpi_object_list params; 584 union acpi_object in_obj; 585 acpi_status rv; 586 587 params.count = 1; 588 params.pointer = &in_obj; 589 in_obj.type = ACPI_TYPE_INTEGER; 590 in_obj.integer.value = 2; 591 592 rv = acpi_evaluate_integer(asus->handle, METHOD_KBD_LIGHT_GET, 593 ¶ms, &kblv); 594 if (ACPI_FAILURE(rv)) { 595 pr_warn("Error reading kled level\n"); 596 return -ENODEV; 597 } 598 return kblv; 599 } 600 601 static int asus_kled_set(struct asus_laptop *asus, int kblv) 602 { 603 if (kblv > 0) 604 kblv = (1 << 7) | (kblv & 0x7F); 605 else 606 kblv = 0; 607 608 if (write_acpi_int(asus->handle, METHOD_KBD_LIGHT_SET, kblv)) { 609 pr_warn("Keyboard LED display write failed\n"); 610 return -EINVAL; 611 } 612 return 0; 613 } 614 615 static void asus_kled_cdev_set(struct led_classdev *led_cdev, 616 enum led_brightness value) 617 { 618 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 619 struct asus_laptop *asus = led->asus; 620 621 led->wk = value; 622 queue_work(asus->led_workqueue, &led->work); 623 } 624 625 static void asus_kled_cdev_update(struct work_struct *work) 626 { 627 struct asus_led *led = container_of(work, struct asus_led, work); 628 struct asus_laptop *asus = led->asus; 629 630 asus_kled_set(asus, led->wk); 631 } 632 633 static enum led_brightness asus_kled_cdev_get(struct led_classdev *led_cdev) 634 { 635 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 636 struct asus_laptop *asus = led->asus; 637 638 return asus_kled_lvl(asus); 639 } 640 641 static void asus_led_exit(struct asus_laptop *asus) 642 { 643 led_classdev_unregister(&asus->wled.led); 644 led_classdev_unregister(&asus->bled.led); 645 led_classdev_unregister(&asus->mled.led); 646 led_classdev_unregister(&asus->tled.led); 647 led_classdev_unregister(&asus->pled.led); 648 led_classdev_unregister(&asus->rled.led); 649 led_classdev_unregister(&asus->gled.led); 650 led_classdev_unregister(&asus->kled.led); 651 652 if (asus->led_workqueue) { 653 destroy_workqueue(asus->led_workqueue); 654 asus->led_workqueue = NULL; 655 } 656 } 657 658 /* Ugly macro, need to fix that later */ 659 static int asus_led_register(struct asus_laptop *asus, 660 struct asus_led *led, 661 const char *name, const char *method) 662 { 663 struct led_classdev *led_cdev = &led->led; 664 665 if (!method || acpi_check_handle(asus->handle, method, NULL)) 666 return 0; /* Led not present */ 667 668 led->asus = asus; 669 led->method = method; 670 671 INIT_WORK(&led->work, asus_led_cdev_update); 672 led_cdev->name = name; 673 led_cdev->brightness_set = asus_led_cdev_set; 674 led_cdev->brightness_get = asus_led_cdev_get; 675 led_cdev->max_brightness = 1; 676 return led_classdev_register(&asus->platform_device->dev, led_cdev); 677 } 678 679 static int asus_led_init(struct asus_laptop *asus) 680 { 681 int r = 0; 682 683 /* 684 * The Pegatron Lucid has no physical leds, but all methods are 685 * available in the DSDT... 686 */ 687 if (asus->is_pega_lucid) 688 return 0; 689 690 /* 691 * Functions that actually update the LED's are called from a 692 * workqueue. By doing this as separate work rather than when the LED 693 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 694 * potentially bad time, such as a timer interrupt. 695 */ 696 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 697 if (!asus->led_workqueue) 698 return -ENOMEM; 699 700 if (asus->wled_type == TYPE_LED) 701 r = asus_led_register(asus, &asus->wled, "asus::wlan", 702 METHOD_WLAN); 703 if (r) 704 goto error; 705 if (asus->bled_type == TYPE_LED) 706 r = asus_led_register(asus, &asus->bled, "asus::bluetooth", 707 METHOD_BLUETOOTH); 708 if (r) 709 goto error; 710 r = asus_led_register(asus, &asus->mled, "asus::mail", METHOD_MLED); 711 if (r) 712 goto error; 713 r = asus_led_register(asus, &asus->tled, "asus::touchpad", METHOD_TLED); 714 if (r) 715 goto error; 716 r = asus_led_register(asus, &asus->rled, "asus::record", METHOD_RLED); 717 if (r) 718 goto error; 719 r = asus_led_register(asus, &asus->pled, "asus::phone", METHOD_PLED); 720 if (r) 721 goto error; 722 r = asus_led_register(asus, &asus->gled, "asus::gaming", METHOD_GLED); 723 if (r) 724 goto error; 725 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL) && 726 !acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_GET, NULL)) { 727 struct asus_led *led = &asus->kled; 728 struct led_classdev *cdev = &led->led; 729 730 led->asus = asus; 731 732 INIT_WORK(&led->work, asus_kled_cdev_update); 733 cdev->name = "asus::kbd_backlight"; 734 cdev->brightness_set = asus_kled_cdev_set; 735 cdev->brightness_get = asus_kled_cdev_get; 736 cdev->max_brightness = 3; 737 r = led_classdev_register(&asus->platform_device->dev, cdev); 738 } 739 error: 740 if (r) 741 asus_led_exit(asus); 742 return r; 743 } 744 745 /* 746 * Backlight device 747 */ 748 static int asus_read_brightness(struct backlight_device *bd) 749 { 750 struct asus_laptop *asus = bl_get_data(bd); 751 unsigned long long value; 752 acpi_status rv; 753 754 rv = acpi_evaluate_integer(asus->handle, METHOD_BRIGHTNESS_GET, 755 NULL, &value); 756 if (ACPI_FAILURE(rv)) { 757 pr_warn("Error reading brightness\n"); 758 return 0; 759 } 760 761 return value; 762 } 763 764 static int asus_set_brightness(struct backlight_device *bd, int value) 765 { 766 struct asus_laptop *asus = bl_get_data(bd); 767 768 if (write_acpi_int(asus->handle, METHOD_BRIGHTNESS_SET, value)) { 769 pr_warn("Error changing brightness\n"); 770 return -EIO; 771 } 772 return 0; 773 } 774 775 static int update_bl_status(struct backlight_device *bd) 776 { 777 int value = bd->props.brightness; 778 779 return asus_set_brightness(bd, value); 780 } 781 782 static const struct backlight_ops asusbl_ops = { 783 .get_brightness = asus_read_brightness, 784 .update_status = update_bl_status, 785 }; 786 787 static int asus_backlight_notify(struct asus_laptop *asus) 788 { 789 struct backlight_device *bd = asus->backlight_device; 790 int old = bd->props.brightness; 791 792 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 793 794 return old; 795 } 796 797 static int asus_backlight_init(struct asus_laptop *asus) 798 { 799 struct backlight_device *bd; 800 struct backlight_properties props; 801 802 if (acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) || 803 acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL)) 804 return 0; 805 806 memset(&props, 0, sizeof(struct backlight_properties)); 807 props.max_brightness = 15; 808 props.type = BACKLIGHT_PLATFORM; 809 810 bd = backlight_device_register(ASUS_LAPTOP_FILE, 811 &asus->platform_device->dev, asus, 812 &asusbl_ops, &props); 813 if (IS_ERR(bd)) { 814 pr_err("Could not register asus backlight device\n"); 815 asus->backlight_device = NULL; 816 return PTR_ERR(bd); 817 } 818 819 asus->backlight_device = bd; 820 bd->props.brightness = asus_read_brightness(bd); 821 bd->props.power = FB_BLANK_UNBLANK; 822 backlight_update_status(bd); 823 return 0; 824 } 825 826 static void asus_backlight_exit(struct asus_laptop *asus) 827 { 828 backlight_device_unregister(asus->backlight_device); 829 asus->backlight_device = NULL; 830 } 831 832 /* 833 * Platform device handlers 834 */ 835 836 /* 837 * We write our info in page, we begin at offset off and cannot write more 838 * than count bytes. We set eof to 1 if we handle those 2 values. We return the 839 * number of bytes written in page 840 */ 841 static ssize_t infos_show(struct device *dev, struct device_attribute *attr, 842 char *page) 843 { 844 struct asus_laptop *asus = dev_get_drvdata(dev); 845 int len = 0; 846 unsigned long long temp; 847 char buf[16]; /* enough for all info */ 848 acpi_status rv; 849 850 /* 851 * We use the easy way, we don't care of off and count, 852 * so we don't set eof to 1 853 */ 854 855 len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n"); 856 len += sprintf(page + len, "Model reference : %s\n", asus->name); 857 /* 858 * The SFUN method probably allows the original driver to get the list 859 * of features supported by a given model. For now, 0x0100 or 0x0800 860 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 861 * The significance of others is yet to be found. 862 */ 863 rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp); 864 if (ACPI_SUCCESS(rv)) 865 len += sprintf(page + len, "SFUN value : %#x\n", 866 (uint) temp); 867 /* 868 * The HWRS method return informations about the hardware. 869 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 870 * 0x40 for WWAN, 0x10 for WIMAX. 871 * The significance of others is yet to be found. 872 * We don't currently use this for device detection, and it 873 * takes several seconds to run on some systems. 874 */ 875 rv = acpi_evaluate_integer(asus->handle, "HWRS", NULL, &temp); 876 if (ACPI_SUCCESS(rv)) 877 len += sprintf(page + len, "HWRS value : %#x\n", 878 (uint) temp); 879 /* 880 * Another value for userspace: the ASYM method returns 0x02 for 881 * battery low and 0x04 for battery critical, its readings tend to be 882 * more accurate than those provided by _BST. 883 * Note: since not all the laptops provide this method, errors are 884 * silently ignored. 885 */ 886 rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp); 887 if (ACPI_SUCCESS(rv)) 888 len += sprintf(page + len, "ASYM value : %#x\n", 889 (uint) temp); 890 if (asus->dsdt_info) { 891 snprintf(buf, 16, "%d", asus->dsdt_info->length); 892 len += sprintf(page + len, "DSDT length : %s\n", buf); 893 snprintf(buf, 16, "%d", asus->dsdt_info->checksum); 894 len += sprintf(page + len, "DSDT checksum : %s\n", buf); 895 snprintf(buf, 16, "%d", asus->dsdt_info->revision); 896 len += sprintf(page + len, "DSDT revision : %s\n", buf); 897 snprintf(buf, 7, "%s", asus->dsdt_info->oem_id); 898 len += sprintf(page + len, "OEM id : %s\n", buf); 899 snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id); 900 len += sprintf(page + len, "OEM table id : %s\n", buf); 901 snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision); 902 len += sprintf(page + len, "OEM revision : 0x%s\n", buf); 903 snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id); 904 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); 905 snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision); 906 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); 907 } 908 909 return len; 910 } 911 static DEVICE_ATTR_RO(infos); 912 913 static ssize_t sysfs_acpi_set(struct asus_laptop *asus, 914 const char *buf, size_t count, 915 const char *method) 916 { 917 int rv, value; 918 919 rv = kstrtoint(buf, 0, &value); 920 if (rv < 0) 921 return rv; 922 923 if (write_acpi_int(asus->handle, method, value)) 924 return -ENODEV; 925 return count; 926 } 927 928 /* 929 * LEDD display 930 */ 931 static ssize_t ledd_show(struct device *dev, struct device_attribute *attr, 932 char *buf) 933 { 934 struct asus_laptop *asus = dev_get_drvdata(dev); 935 936 return sprintf(buf, "0x%08x\n", asus->ledd_status); 937 } 938 939 static ssize_t ledd_store(struct device *dev, struct device_attribute *attr, 940 const char *buf, size_t count) 941 { 942 struct asus_laptop *asus = dev_get_drvdata(dev); 943 int rv, value; 944 945 rv = kstrtoint(buf, 0, &value); 946 if (rv < 0) 947 return rv; 948 949 if (write_acpi_int(asus->handle, METHOD_LEDD, value)) { 950 pr_warn("LED display write failed\n"); 951 return -ENODEV; 952 } 953 954 asus->ledd_status = (u32) value; 955 return count; 956 } 957 static DEVICE_ATTR_RW(ledd); 958 959 /* 960 * Wireless 961 */ 962 static int asus_wireless_status(struct asus_laptop *asus, int mask) 963 { 964 unsigned long long status; 965 acpi_status rv = AE_OK; 966 967 if (!asus->have_rsts) 968 return (asus->wireless_status & mask) ? 1 : 0; 969 970 rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS, 971 NULL, &status); 972 if (ACPI_FAILURE(rv)) { 973 pr_warn("Error reading Wireless status\n"); 974 return -EINVAL; 975 } 976 return !!(status & mask); 977 } 978 979 /* 980 * WLAN 981 */ 982 static int asus_wlan_set(struct asus_laptop *asus, int status) 983 { 984 if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) { 985 pr_warn("Error setting wlan status to %d\n", status); 986 return -EIO; 987 } 988 return 0; 989 } 990 991 static ssize_t wlan_show(struct device *dev, struct device_attribute *attr, 992 char *buf) 993 { 994 struct asus_laptop *asus = dev_get_drvdata(dev); 995 996 return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS)); 997 } 998 999 static ssize_t wlan_store(struct device *dev, struct device_attribute *attr, 1000 const char *buf, size_t count) 1001 { 1002 struct asus_laptop *asus = dev_get_drvdata(dev); 1003 1004 return sysfs_acpi_set(asus, buf, count, METHOD_WLAN); 1005 } 1006 static DEVICE_ATTR_RW(wlan); 1007 1008 /*e 1009 * Bluetooth 1010 */ 1011 static int asus_bluetooth_set(struct asus_laptop *asus, int status) 1012 { 1013 if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) { 1014 pr_warn("Error setting bluetooth status to %d\n", status); 1015 return -EIO; 1016 } 1017 return 0; 1018 } 1019 1020 static ssize_t bluetooth_show(struct device *dev, struct device_attribute *attr, 1021 char *buf) 1022 { 1023 struct asus_laptop *asus = dev_get_drvdata(dev); 1024 1025 return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS)); 1026 } 1027 1028 static ssize_t bluetooth_store(struct device *dev, 1029 struct device_attribute *attr, const char *buf, 1030 size_t count) 1031 { 1032 struct asus_laptop *asus = dev_get_drvdata(dev); 1033 1034 return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH); 1035 } 1036 static DEVICE_ATTR_RW(bluetooth); 1037 1038 /* 1039 * Wimax 1040 */ 1041 static int asus_wimax_set(struct asus_laptop *asus, int status) 1042 { 1043 if (write_acpi_int(asus->handle, METHOD_WIMAX, !!status)) { 1044 pr_warn("Error setting wimax status to %d\n", status); 1045 return -EIO; 1046 } 1047 return 0; 1048 } 1049 1050 static ssize_t wimax_show(struct device *dev, struct device_attribute *attr, 1051 char *buf) 1052 { 1053 struct asus_laptop *asus = dev_get_drvdata(dev); 1054 1055 return sprintf(buf, "%d\n", asus_wireless_status(asus, WM_RSTS)); 1056 } 1057 1058 static ssize_t wimax_store(struct device *dev, struct device_attribute *attr, 1059 const char *buf, size_t count) 1060 { 1061 struct asus_laptop *asus = dev_get_drvdata(dev); 1062 1063 return sysfs_acpi_set(asus, buf, count, METHOD_WIMAX); 1064 } 1065 static DEVICE_ATTR_RW(wimax); 1066 1067 /* 1068 * Wwan 1069 */ 1070 static int asus_wwan_set(struct asus_laptop *asus, int status) 1071 { 1072 if (write_acpi_int(asus->handle, METHOD_WWAN, !!status)) { 1073 pr_warn("Error setting wwan status to %d\n", status); 1074 return -EIO; 1075 } 1076 return 0; 1077 } 1078 1079 static ssize_t wwan_show(struct device *dev, struct device_attribute *attr, 1080 char *buf) 1081 { 1082 struct asus_laptop *asus = dev_get_drvdata(dev); 1083 1084 return sprintf(buf, "%d\n", asus_wireless_status(asus, WW_RSTS)); 1085 } 1086 1087 static ssize_t wwan_store(struct device *dev, struct device_attribute *attr, 1088 const char *buf, size_t count) 1089 { 1090 struct asus_laptop *asus = dev_get_drvdata(dev); 1091 1092 return sysfs_acpi_set(asus, buf, count, METHOD_WWAN); 1093 } 1094 static DEVICE_ATTR_RW(wwan); 1095 1096 /* 1097 * Display 1098 */ 1099 static void asus_set_display(struct asus_laptop *asus, int value) 1100 { 1101 /* no sanity check needed for now */ 1102 if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value)) 1103 pr_warn("Error setting display\n"); 1104 return; 1105 } 1106 1107 /* 1108 * Experimental support for display switching. As of now: 1 should activate 1109 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI. 1110 * Any combination (bitwise) of these will suffice. I never actually tested 4 1111 * displays hooked up simultaneously, so be warned. See the acpi4asus README 1112 * for more info. 1113 */ 1114 static ssize_t display_store(struct device *dev, struct device_attribute *attr, 1115 const char *buf, size_t count) 1116 { 1117 struct asus_laptop *asus = dev_get_drvdata(dev); 1118 int rv, value; 1119 1120 rv = kstrtoint(buf, 0, &value); 1121 if (rv < 0) 1122 return rv; 1123 1124 asus_set_display(asus, value); 1125 return count; 1126 } 1127 static DEVICE_ATTR_WO(display); 1128 1129 /* 1130 * Light Sens 1131 */ 1132 static void asus_als_switch(struct asus_laptop *asus, int value) 1133 { 1134 int ret; 1135 1136 if (asus->is_pega_lucid) { 1137 ret = asus_pega_lucid_set(asus, PEGA_ALS, value); 1138 if (!ret) 1139 ret = asus_pega_lucid_set(asus, PEGA_ALS_POWER, value); 1140 } else { 1141 ret = write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value); 1142 } 1143 if (ret) 1144 pr_warn("Error setting light sensor switch\n"); 1145 1146 asus->light_switch = value; 1147 } 1148 1149 static ssize_t ls_switch_show(struct device *dev, struct device_attribute *attr, 1150 char *buf) 1151 { 1152 struct asus_laptop *asus = dev_get_drvdata(dev); 1153 1154 return sprintf(buf, "%d\n", asus->light_switch); 1155 } 1156 1157 static ssize_t ls_switch_store(struct device *dev, 1158 struct device_attribute *attr, const char *buf, 1159 size_t count) 1160 { 1161 struct asus_laptop *asus = dev_get_drvdata(dev); 1162 int rv, value; 1163 1164 rv = kstrtoint(buf, 0, &value); 1165 if (rv < 0) 1166 return rv; 1167 1168 asus_als_switch(asus, value ? 1 : 0); 1169 return count; 1170 } 1171 static DEVICE_ATTR_RW(ls_switch); 1172 1173 static void asus_als_level(struct asus_laptop *asus, int value) 1174 { 1175 if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value)) 1176 pr_warn("Error setting light sensor level\n"); 1177 asus->light_level = value; 1178 } 1179 1180 static ssize_t ls_level_show(struct device *dev, struct device_attribute *attr, 1181 char *buf) 1182 { 1183 struct asus_laptop *asus = dev_get_drvdata(dev); 1184 1185 return sprintf(buf, "%d\n", asus->light_level); 1186 } 1187 1188 static ssize_t ls_level_store(struct device *dev, struct device_attribute *attr, 1189 const char *buf, size_t count) 1190 { 1191 struct asus_laptop *asus = dev_get_drvdata(dev); 1192 int rv, value; 1193 1194 rv = kstrtoint(buf, 0, &value); 1195 if (rv < 0) 1196 return rv; 1197 1198 value = (0 < value) ? ((15 < value) ? 15 : value) : 0; 1199 /* 0 <= value <= 15 */ 1200 asus_als_level(asus, value); 1201 1202 return count; 1203 } 1204 static DEVICE_ATTR_RW(ls_level); 1205 1206 static int pega_int_read(struct asus_laptop *asus, int arg, int *result) 1207 { 1208 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 1209 int err = write_acpi_int_ret(asus->handle, METHOD_PEGA_READ, arg, 1210 &buffer); 1211 if (!err) { 1212 union acpi_object *obj = buffer.pointer; 1213 if (obj && obj->type == ACPI_TYPE_INTEGER) 1214 *result = obj->integer.value; 1215 else 1216 err = -EIO; 1217 } 1218 return err; 1219 } 1220 1221 static ssize_t ls_value_show(struct device *dev, struct device_attribute *attr, 1222 char *buf) 1223 { 1224 struct asus_laptop *asus = dev_get_drvdata(dev); 1225 int err, hi, lo; 1226 1227 err = pega_int_read(asus, PEGA_READ_ALS_H, &hi); 1228 if (!err) 1229 err = pega_int_read(asus, PEGA_READ_ALS_L, &lo); 1230 if (!err) 1231 return sprintf(buf, "%d\n", 10 * hi + lo); 1232 return err; 1233 } 1234 static DEVICE_ATTR_RO(ls_value); 1235 1236 /* 1237 * GPS 1238 */ 1239 static int asus_gps_status(struct asus_laptop *asus) 1240 { 1241 unsigned long long status; 1242 acpi_status rv; 1243 1244 rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS, 1245 NULL, &status); 1246 if (ACPI_FAILURE(rv)) { 1247 pr_warn("Error reading GPS status\n"); 1248 return -ENODEV; 1249 } 1250 return !!status; 1251 } 1252 1253 static int asus_gps_switch(struct asus_laptop *asus, int status) 1254 { 1255 const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF; 1256 1257 if (write_acpi_int(asus->handle, meth, 0x02)) 1258 return -ENODEV; 1259 return 0; 1260 } 1261 1262 static ssize_t gps_show(struct device *dev, struct device_attribute *attr, 1263 char *buf) 1264 { 1265 struct asus_laptop *asus = dev_get_drvdata(dev); 1266 1267 return sprintf(buf, "%d\n", asus_gps_status(asus)); 1268 } 1269 1270 static ssize_t gps_store(struct device *dev, struct device_attribute *attr, 1271 const char *buf, size_t count) 1272 { 1273 struct asus_laptop *asus = dev_get_drvdata(dev); 1274 int rv, value; 1275 int ret; 1276 1277 rv = kstrtoint(buf, 0, &value); 1278 if (rv < 0) 1279 return rv; 1280 ret = asus_gps_switch(asus, !!value); 1281 if (ret) 1282 return ret; 1283 rfkill_set_sw_state(asus->gps.rfkill, !value); 1284 return count; 1285 } 1286 static DEVICE_ATTR_RW(gps); 1287 1288 /* 1289 * rfkill 1290 */ 1291 static int asus_gps_rfkill_set(void *data, bool blocked) 1292 { 1293 struct asus_laptop *asus = data; 1294 1295 return asus_gps_switch(asus, !blocked); 1296 } 1297 1298 static const struct rfkill_ops asus_gps_rfkill_ops = { 1299 .set_block = asus_gps_rfkill_set, 1300 }; 1301 1302 static int asus_rfkill_set(void *data, bool blocked) 1303 { 1304 struct asus_rfkill *rfk = data; 1305 struct asus_laptop *asus = rfk->asus; 1306 1307 if (rfk->control_id == WL_RSTS) 1308 return asus_wlan_set(asus, !blocked); 1309 else if (rfk->control_id == BT_RSTS) 1310 return asus_bluetooth_set(asus, !blocked); 1311 else if (rfk->control_id == WM_RSTS) 1312 return asus_wimax_set(asus, !blocked); 1313 else if (rfk->control_id == WW_RSTS) 1314 return asus_wwan_set(asus, !blocked); 1315 1316 return -EINVAL; 1317 } 1318 1319 static const struct rfkill_ops asus_rfkill_ops = { 1320 .set_block = asus_rfkill_set, 1321 }; 1322 1323 static void asus_rfkill_terminate(struct asus_rfkill *rfk) 1324 { 1325 if (!rfk->rfkill) 1326 return ; 1327 1328 rfkill_unregister(rfk->rfkill); 1329 rfkill_destroy(rfk->rfkill); 1330 rfk->rfkill = NULL; 1331 } 1332 1333 static void asus_rfkill_exit(struct asus_laptop *asus) 1334 { 1335 asus_rfkill_terminate(&asus->wwan); 1336 asus_rfkill_terminate(&asus->bluetooth); 1337 asus_rfkill_terminate(&asus->wlan); 1338 asus_rfkill_terminate(&asus->gps); 1339 } 1340 1341 static int asus_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk, 1342 const char *name, int control_id, int type, 1343 const struct rfkill_ops *ops) 1344 { 1345 int result; 1346 1347 rfk->control_id = control_id; 1348 rfk->asus = asus; 1349 rfk->rfkill = rfkill_alloc(name, &asus->platform_device->dev, 1350 type, ops, rfk); 1351 if (!rfk->rfkill) 1352 return -EINVAL; 1353 1354 result = rfkill_register(rfk->rfkill); 1355 if (result) { 1356 rfkill_destroy(rfk->rfkill); 1357 rfk->rfkill = NULL; 1358 } 1359 1360 return result; 1361 } 1362 1363 static int asus_rfkill_init(struct asus_laptop *asus) 1364 { 1365 int result = 0; 1366 1367 if (asus->is_pega_lucid) 1368 return -ENODEV; 1369 1370 if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) && 1371 !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) && 1372 !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL)) 1373 result = asus_rfkill_setup(asus, &asus->gps, "asus-gps", 1374 -1, RFKILL_TYPE_GPS, 1375 &asus_gps_rfkill_ops); 1376 if (result) 1377 goto exit; 1378 1379 1380 if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL) && 1381 asus->wled_type == TYPE_RFKILL) 1382 result = asus_rfkill_setup(asus, &asus->wlan, "asus-wlan", 1383 WL_RSTS, RFKILL_TYPE_WLAN, 1384 &asus_rfkill_ops); 1385 if (result) 1386 goto exit; 1387 1388 if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL) && 1389 asus->bled_type == TYPE_RFKILL) 1390 result = asus_rfkill_setup(asus, &asus->bluetooth, 1391 "asus-bluetooth", BT_RSTS, 1392 RFKILL_TYPE_BLUETOOTH, 1393 &asus_rfkill_ops); 1394 if (result) 1395 goto exit; 1396 1397 if (!acpi_check_handle(asus->handle, METHOD_WWAN, NULL)) 1398 result = asus_rfkill_setup(asus, &asus->wwan, "asus-wwan", 1399 WW_RSTS, RFKILL_TYPE_WWAN, 1400 &asus_rfkill_ops); 1401 if (result) 1402 goto exit; 1403 1404 if (!acpi_check_handle(asus->handle, METHOD_WIMAX, NULL)) 1405 result = asus_rfkill_setup(asus, &asus->wimax, "asus-wimax", 1406 WM_RSTS, RFKILL_TYPE_WIMAX, 1407 &asus_rfkill_ops); 1408 if (result) 1409 goto exit; 1410 1411 exit: 1412 if (result) 1413 asus_rfkill_exit(asus); 1414 1415 return result; 1416 } 1417 1418 static int pega_rfkill_set(void *data, bool blocked) 1419 { 1420 struct asus_rfkill *rfk = data; 1421 1422 int ret = asus_pega_lucid_set(rfk->asus, rfk->control_id, !blocked); 1423 return ret; 1424 } 1425 1426 static const struct rfkill_ops pega_rfkill_ops = { 1427 .set_block = pega_rfkill_set, 1428 }; 1429 1430 static int pega_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk, 1431 const char *name, int controlid, int rfkill_type) 1432 { 1433 return asus_rfkill_setup(asus, rfk, name, controlid, rfkill_type, 1434 &pega_rfkill_ops); 1435 } 1436 1437 static int pega_rfkill_init(struct asus_laptop *asus) 1438 { 1439 int ret = 0; 1440 1441 if(!asus->is_pega_lucid) 1442 return -ENODEV; 1443 1444 ret = pega_rfkill_setup(asus, &asus->wlan, "pega-wlan", 1445 PEGA_WLAN, RFKILL_TYPE_WLAN); 1446 if(ret) 1447 goto exit; 1448 1449 ret = pega_rfkill_setup(asus, &asus->bluetooth, "pega-bt", 1450 PEGA_BLUETOOTH, RFKILL_TYPE_BLUETOOTH); 1451 if(ret) 1452 goto exit; 1453 1454 ret = pega_rfkill_setup(asus, &asus->wwan, "pega-wwan", 1455 PEGA_WWAN, RFKILL_TYPE_WWAN); 1456 1457 exit: 1458 if (ret) 1459 asus_rfkill_exit(asus); 1460 1461 return ret; 1462 } 1463 1464 /* 1465 * Input device (i.e. hotkeys) 1466 */ 1467 static void asus_input_notify(struct asus_laptop *asus, int event) 1468 { 1469 if (!asus->inputdev) 1470 return ; 1471 if (!sparse_keymap_report_event(asus->inputdev, event, 1, true)) 1472 pr_info("Unknown key %x pressed\n", event); 1473 } 1474 1475 static int asus_input_init(struct asus_laptop *asus) 1476 { 1477 struct input_dev *input; 1478 int error; 1479 1480 input = input_allocate_device(); 1481 if (!input) 1482 return -ENOMEM; 1483 1484 input->name = "Asus Laptop extra buttons"; 1485 input->phys = ASUS_LAPTOP_FILE "/input0"; 1486 input->id.bustype = BUS_HOST; 1487 input->dev.parent = &asus->platform_device->dev; 1488 1489 error = sparse_keymap_setup(input, asus_keymap, NULL); 1490 if (error) { 1491 pr_err("Unable to setup input device keymap\n"); 1492 goto err_free_dev; 1493 } 1494 error = input_register_device(input); 1495 if (error) { 1496 pr_warn("Unable to register input device\n"); 1497 goto err_free_dev; 1498 } 1499 1500 asus->inputdev = input; 1501 return 0; 1502 1503 err_free_dev: 1504 input_free_device(input); 1505 return error; 1506 } 1507 1508 static void asus_input_exit(struct asus_laptop *asus) 1509 { 1510 if (asus->inputdev) 1511 input_unregister_device(asus->inputdev); 1512 asus->inputdev = NULL; 1513 } 1514 1515 /* 1516 * ACPI driver 1517 */ 1518 static void asus_acpi_notify(struct acpi_device *device, u32 event) 1519 { 1520 struct asus_laptop *asus = acpi_driver_data(device); 1521 u16 count; 1522 1523 /* TODO Find a better way to handle events count. */ 1524 count = asus->event_count[event % 128]++; 1525 acpi_bus_generate_netlink_event(asus->device->pnp.device_class, 1526 dev_name(&asus->device->dev), event, 1527 count); 1528 1529 if (event >= ATKD_BRNUP_MIN && event <= ATKD_BRNUP_MAX) 1530 event = ATKD_BRNUP; 1531 else if (event >= ATKD_BRNDOWN_MIN && 1532 event <= ATKD_BRNDOWN_MAX) 1533 event = ATKD_BRNDOWN; 1534 1535 /* Brightness events are special */ 1536 if (event == ATKD_BRNDOWN || event == ATKD_BRNUP) { 1537 if (asus->backlight_device != NULL) { 1538 /* Update the backlight device. */ 1539 asus_backlight_notify(asus); 1540 return ; 1541 } 1542 } 1543 1544 /* Accelerometer "coarse orientation change" event */ 1545 if (asus->pega_accel_poll && event == 0xEA) { 1546 kobject_uevent(&asus->pega_accel_poll->dev.kobj, KOBJ_CHANGE); 1547 return ; 1548 } 1549 1550 asus_input_notify(asus, event); 1551 } 1552 1553 static struct attribute *asus_attributes[] = { 1554 &dev_attr_infos.attr, 1555 &dev_attr_wlan.attr, 1556 &dev_attr_bluetooth.attr, 1557 &dev_attr_wimax.attr, 1558 &dev_attr_wwan.attr, 1559 &dev_attr_display.attr, 1560 &dev_attr_ledd.attr, 1561 &dev_attr_ls_value.attr, 1562 &dev_attr_ls_level.attr, 1563 &dev_attr_ls_switch.attr, 1564 &dev_attr_gps.attr, 1565 NULL 1566 }; 1567 1568 static umode_t asus_sysfs_is_visible(struct kobject *kobj, 1569 struct attribute *attr, 1570 int idx) 1571 { 1572 struct device *dev = kobj_to_dev(kobj); 1573 struct asus_laptop *asus = dev_get_drvdata(dev); 1574 acpi_handle handle = asus->handle; 1575 bool supported; 1576 1577 if (asus->is_pega_lucid) { 1578 /* no ls_level interface on the Lucid */ 1579 if (attr == &dev_attr_ls_switch.attr) 1580 supported = true; 1581 else if (attr == &dev_attr_ls_level.attr) 1582 supported = false; 1583 else 1584 goto normal; 1585 1586 return supported ? attr->mode : 0; 1587 } 1588 1589 normal: 1590 if (attr == &dev_attr_wlan.attr) { 1591 supported = !acpi_check_handle(handle, METHOD_WLAN, NULL); 1592 1593 } else if (attr == &dev_attr_bluetooth.attr) { 1594 supported = !acpi_check_handle(handle, METHOD_BLUETOOTH, NULL); 1595 1596 } else if (attr == &dev_attr_display.attr) { 1597 supported = !acpi_check_handle(handle, METHOD_SWITCH_DISPLAY, NULL); 1598 1599 } else if (attr == &dev_attr_wimax.attr) { 1600 supported = 1601 !acpi_check_handle(asus->handle, METHOD_WIMAX, NULL); 1602 1603 } else if (attr == &dev_attr_wwan.attr) { 1604 supported = !acpi_check_handle(asus->handle, METHOD_WWAN, NULL); 1605 1606 } else if (attr == &dev_attr_ledd.attr) { 1607 supported = !acpi_check_handle(handle, METHOD_LEDD, NULL); 1608 1609 } else if (attr == &dev_attr_ls_switch.attr || 1610 attr == &dev_attr_ls_level.attr) { 1611 supported = !acpi_check_handle(handle, METHOD_ALS_CONTROL, NULL) && 1612 !acpi_check_handle(handle, METHOD_ALS_LEVEL, NULL); 1613 } else if (attr == &dev_attr_ls_value.attr) { 1614 supported = asus->is_pega_lucid; 1615 } else if (attr == &dev_attr_gps.attr) { 1616 supported = !acpi_check_handle(handle, METHOD_GPS_ON, NULL) && 1617 !acpi_check_handle(handle, METHOD_GPS_OFF, NULL) && 1618 !acpi_check_handle(handle, METHOD_GPS_STATUS, NULL); 1619 } else { 1620 supported = true; 1621 } 1622 1623 return supported ? attr->mode : 0; 1624 } 1625 1626 1627 static const struct attribute_group asus_attr_group = { 1628 .is_visible = asus_sysfs_is_visible, 1629 .attrs = asus_attributes, 1630 }; 1631 1632 static int asus_platform_init(struct asus_laptop *asus) 1633 { 1634 int result; 1635 1636 asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, PLATFORM_DEVID_NONE); 1637 if (!asus->platform_device) 1638 return -ENOMEM; 1639 platform_set_drvdata(asus->platform_device, asus); 1640 1641 result = platform_device_add(asus->platform_device); 1642 if (result) 1643 goto fail_platform_device; 1644 1645 result = sysfs_create_group(&asus->platform_device->dev.kobj, 1646 &asus_attr_group); 1647 if (result) 1648 goto fail_sysfs; 1649 1650 return 0; 1651 1652 fail_sysfs: 1653 platform_device_del(asus->platform_device); 1654 fail_platform_device: 1655 platform_device_put(asus->platform_device); 1656 return result; 1657 } 1658 1659 static void asus_platform_exit(struct asus_laptop *asus) 1660 { 1661 sysfs_remove_group(&asus->platform_device->dev.kobj, &asus_attr_group); 1662 platform_device_unregister(asus->platform_device); 1663 } 1664 1665 static struct platform_driver platform_driver = { 1666 .driver = { 1667 .name = ASUS_LAPTOP_FILE, 1668 }, 1669 }; 1670 1671 /* 1672 * This function is used to initialize the context with right values. In this 1673 * method, we can make all the detection we want, and modify the asus_laptop 1674 * struct 1675 */ 1676 static int asus_laptop_get_info(struct asus_laptop *asus) 1677 { 1678 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 1679 union acpi_object *model = NULL; 1680 unsigned long long bsts_result; 1681 char *string = NULL; 1682 acpi_status status; 1683 1684 /* 1685 * Get DSDT headers early enough to allow for differentiating between 1686 * models, but late enough to allow acpi_bus_register_driver() to fail 1687 * before doing anything ACPI-specific. Should we encounter a machine, 1688 * which needs special handling (i.e. its hotkey device has a different 1689 * HID), this bit will be moved. 1690 */ 1691 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info); 1692 if (ACPI_FAILURE(status)) 1693 pr_warn("Couldn't get the DSDT table header\n"); 1694 1695 /* We have to write 0 on init this far for all ASUS models */ 1696 if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) { 1697 pr_err("Hotkey initialization failed\n"); 1698 return -ENODEV; 1699 } 1700 1701 /* This needs to be called for some laptops to init properly */ 1702 status = 1703 acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result); 1704 if (ACPI_FAILURE(status)) 1705 pr_warn("Error calling BSTS\n"); 1706 else if (bsts_result) 1707 pr_notice("BSTS called, 0x%02x returned\n", 1708 (uint) bsts_result); 1709 1710 /* This too ... */ 1711 if (write_acpi_int(asus->handle, "CWAP", wapf)) 1712 pr_err("Error calling CWAP(%d)\n", wapf); 1713 /* 1714 * Try to match the object returned by INIT to the specific model. 1715 * Handle every possible object (or the lack of thereof) the DSDT 1716 * writers might throw at us. When in trouble, we pass NULL to 1717 * asus_model_match() and try something completely different. 1718 */ 1719 if (buffer.pointer) { 1720 model = buffer.pointer; 1721 switch (model->type) { 1722 case ACPI_TYPE_STRING: 1723 string = model->string.pointer; 1724 break; 1725 case ACPI_TYPE_BUFFER: 1726 string = model->buffer.pointer; 1727 break; 1728 default: 1729 string = ""; 1730 break; 1731 } 1732 } 1733 asus->name = kstrdup(string, GFP_KERNEL); 1734 if (!asus->name) { 1735 kfree(buffer.pointer); 1736 return -ENOMEM; 1737 } 1738 1739 if (string) 1740 pr_notice(" %s model detected\n", string); 1741 1742 if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL)) 1743 asus->have_rsts = true; 1744 1745 kfree(model); 1746 1747 return AE_OK; 1748 } 1749 1750 static int asus_acpi_init(struct asus_laptop *asus) 1751 { 1752 int result = 0; 1753 1754 result = acpi_bus_get_status(asus->device); 1755 if (result) 1756 return result; 1757 if (!asus->device->status.present) { 1758 pr_err("Hotkey device not present, aborting\n"); 1759 return -ENODEV; 1760 } 1761 1762 result = asus_laptop_get_info(asus); 1763 if (result) 1764 return result; 1765 1766 if (!strcmp(bled_type, "led")) 1767 asus->bled_type = TYPE_LED; 1768 else if (!strcmp(bled_type, "rfkill")) 1769 asus->bled_type = TYPE_RFKILL; 1770 1771 if (!strcmp(wled_type, "led")) 1772 asus->wled_type = TYPE_LED; 1773 else if (!strcmp(wled_type, "rfkill")) 1774 asus->wled_type = TYPE_RFKILL; 1775 1776 if (bluetooth_status >= 0) 1777 asus_bluetooth_set(asus, !!bluetooth_status); 1778 1779 if (wlan_status >= 0) 1780 asus_wlan_set(asus, !!wlan_status); 1781 1782 if (wimax_status >= 0) 1783 asus_wimax_set(asus, !!wimax_status); 1784 1785 if (wwan_status >= 0) 1786 asus_wwan_set(asus, !!wwan_status); 1787 1788 /* Keyboard Backlight is on by default */ 1789 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL)) 1790 asus_kled_set(asus, 1); 1791 1792 /* LED display is off by default */ 1793 asus->ledd_status = 0xFFF; 1794 1795 /* Set initial values of light sensor and level */ 1796 asus->light_switch = !!als_status; 1797 asus->light_level = 5; /* level 5 for sensor sensitivity */ 1798 1799 if (asus->is_pega_lucid) { 1800 asus_als_switch(asus, asus->light_switch); 1801 } else if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) && 1802 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) { 1803 asus_als_switch(asus, asus->light_switch); 1804 asus_als_level(asus, asus->light_level); 1805 } 1806 1807 return result; 1808 } 1809 1810 static void asus_dmi_check(void) 1811 { 1812 const char *model; 1813 1814 model = dmi_get_system_info(DMI_PRODUCT_NAME); 1815 if (!model) 1816 return; 1817 1818 /* On L1400B WLED control the sound card, don't mess with it ... */ 1819 if (strncmp(model, "L1400B", 6) == 0) { 1820 wlan_status = -1; 1821 } 1822 } 1823 1824 static bool asus_device_present; 1825 1826 static int asus_acpi_add(struct acpi_device *device) 1827 { 1828 struct asus_laptop *asus; 1829 int result; 1830 1831 pr_notice("Asus Laptop Support version %s\n", 1832 ASUS_LAPTOP_VERSION); 1833 asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL); 1834 if (!asus) 1835 return -ENOMEM; 1836 asus->handle = device->handle; 1837 strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME); 1838 strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS); 1839 device->driver_data = asus; 1840 asus->device = device; 1841 1842 asus_dmi_check(); 1843 1844 result = asus_acpi_init(asus); 1845 if (result) 1846 goto fail_platform; 1847 1848 /* 1849 * Need platform type detection first, then the platform 1850 * device. It is used as a parent for the sub-devices below. 1851 */ 1852 asus->is_pega_lucid = asus_check_pega_lucid(asus); 1853 result = asus_platform_init(asus); 1854 if (result) 1855 goto fail_platform; 1856 1857 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 1858 result = asus_backlight_init(asus); 1859 if (result) 1860 goto fail_backlight; 1861 } 1862 1863 result = asus_input_init(asus); 1864 if (result) 1865 goto fail_input; 1866 1867 result = asus_led_init(asus); 1868 if (result) 1869 goto fail_led; 1870 1871 result = asus_rfkill_init(asus); 1872 if (result && result != -ENODEV) 1873 goto fail_rfkill; 1874 1875 result = pega_accel_init(asus); 1876 if (result && result != -ENODEV) 1877 goto fail_pega_accel; 1878 1879 result = pega_rfkill_init(asus); 1880 if (result && result != -ENODEV) 1881 goto fail_pega_rfkill; 1882 1883 asus_device_present = true; 1884 return 0; 1885 1886 fail_pega_rfkill: 1887 pega_accel_exit(asus); 1888 fail_pega_accel: 1889 asus_rfkill_exit(asus); 1890 fail_rfkill: 1891 asus_led_exit(asus); 1892 fail_led: 1893 asus_input_exit(asus); 1894 fail_input: 1895 asus_backlight_exit(asus); 1896 fail_backlight: 1897 asus_platform_exit(asus); 1898 fail_platform: 1899 kfree(asus); 1900 1901 return result; 1902 } 1903 1904 static void asus_acpi_remove(struct acpi_device *device) 1905 { 1906 struct asus_laptop *asus = acpi_driver_data(device); 1907 1908 asus_backlight_exit(asus); 1909 asus_rfkill_exit(asus); 1910 asus_led_exit(asus); 1911 asus_input_exit(asus); 1912 pega_accel_exit(asus); 1913 asus_platform_exit(asus); 1914 1915 kfree(asus->name); 1916 kfree(asus); 1917 } 1918 1919 static const struct acpi_device_id asus_device_ids[] = { 1920 {"ATK0100", 0}, 1921 {"ATK0101", 0}, 1922 {"", 0}, 1923 }; 1924 MODULE_DEVICE_TABLE(acpi, asus_device_ids); 1925 1926 static struct acpi_driver asus_acpi_driver = { 1927 .name = ASUS_LAPTOP_NAME, 1928 .class = ASUS_LAPTOP_CLASS, 1929 .owner = THIS_MODULE, 1930 .ids = asus_device_ids, 1931 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, 1932 .ops = { 1933 .add = asus_acpi_add, 1934 .remove = asus_acpi_remove, 1935 .notify = asus_acpi_notify, 1936 }, 1937 }; 1938 1939 static int __init asus_laptop_init(void) 1940 { 1941 int result; 1942 1943 result = platform_driver_register(&platform_driver); 1944 if (result < 0) 1945 return result; 1946 1947 result = acpi_bus_register_driver(&asus_acpi_driver); 1948 if (result < 0) 1949 goto fail_acpi_driver; 1950 if (!asus_device_present) { 1951 result = -ENODEV; 1952 goto fail_no_device; 1953 } 1954 return 0; 1955 1956 fail_no_device: 1957 acpi_bus_unregister_driver(&asus_acpi_driver); 1958 fail_acpi_driver: 1959 platform_driver_unregister(&platform_driver); 1960 return result; 1961 } 1962 1963 static void __exit asus_laptop_exit(void) 1964 { 1965 acpi_bus_unregister_driver(&asus_acpi_driver); 1966 platform_driver_unregister(&platform_driver); 1967 } 1968 1969 module_init(asus_laptop_init); 1970 module_exit(asus_laptop_exit); 1971