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