1 /* 2 * asus-laptop.c - Asus Laptop Support 3 * 4 * 5 * Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor 6 * Copyright (C) 2006-2007 Corentin Chary 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 * 23 * The development page for this driver is located at 24 * http://sourceforge.net/projects/acpi4asus/ 25 * 26 * Credits: 27 * Pontus Fuchs - Helper functions, cleanup 28 * Johann Wiesner - Small compile fixes 29 * John Belmonte - ACPI code for Toshiba laptop was a good starting point. 30 * Eric Burghard - LED display support for W1N 31 * Josh Green - Light Sens support 32 * Thomas Tuttle - His first patch for led support was very helpful 33 * Sam Lin - GPS support 34 */ 35 36 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 37 38 #include <linux/kernel.h> 39 #include <linux/module.h> 40 #include <linux/init.h> 41 #include <linux/types.h> 42 #include <linux/err.h> 43 #include <linux/proc_fs.h> 44 #include <linux/backlight.h> 45 #include <linux/fb.h> 46 #include <linux/leds.h> 47 #include <linux/platform_device.h> 48 #include <linux/uaccess.h> 49 #include <linux/input.h> 50 #include <linux/input/sparse-keymap.h> 51 #include <linux/rfkill.h> 52 #include <linux/slab.h> 53 #include <linux/dmi.h> 54 #include <acpi/acpi_drivers.h> 55 #include <acpi/acpi_bus.h> 56 57 #define ASUS_LAPTOP_VERSION "0.42" 58 59 #define ASUS_LAPTOP_NAME "Asus Laptop Support" 60 #define ASUS_LAPTOP_CLASS "hotkey" 61 #define ASUS_LAPTOP_DEVICE_NAME "Hotkey" 62 #define ASUS_LAPTOP_FILE KBUILD_MODNAME 63 #define ASUS_LAPTOP_PREFIX "\\_SB.ATKD." 64 65 MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary"); 66 MODULE_DESCRIPTION(ASUS_LAPTOP_NAME); 67 MODULE_LICENSE("GPL"); 68 69 /* 70 * WAPF defines the behavior of the Fn+Fx wlan key 71 * The significance of values is yet to be found, but 72 * most of the time: 73 * Bit | Bluetooth | WLAN 74 * 0 | Hardware | Hardware 75 * 1 | Hardware | Software 76 * 4 | Software | Software 77 */ 78 static uint wapf = 1; 79 module_param(wapf, uint, 0444); 80 MODULE_PARM_DESC(wapf, "WAPF value"); 81 82 static int wlan_status = 1; 83 static int bluetooth_status = 1; 84 static int wimax_status = -1; 85 static int wwan_status = -1; 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 /* 108 * Some events we use, same for all Asus 109 */ 110 #define ATKD_BR_UP 0x10 /* (event & ~ATKD_BR_UP) = brightness level */ 111 #define ATKD_BR_DOWN 0x20 /* (event & ~ATKD_BR_DOWN) = britghness level */ 112 #define ATKD_BR_MIN ATKD_BR_UP 113 #define ATKD_BR_MAX (ATKD_BR_DOWN | 0xF) /* 0x2f */ 114 #define ATKD_LCD_ON 0x33 115 #define ATKD_LCD_OFF 0x34 116 117 /* 118 * Known bits returned by \_SB.ATKD.HWRS 119 */ 120 #define WL_HWRS 0x80 121 #define BT_HWRS 0x100 122 123 /* 124 * Flags for hotk status 125 * WL_ON and BT_ON are also used for wireless_status() 126 */ 127 #define WL_RSTS 0x01 /* internal Wifi */ 128 #define BT_RSTS 0x02 /* internal Bluetooth */ 129 #define WM_RSTS 0x08 /* internal wimax */ 130 #define WW_RSTS 0x20 /* internal wwan */ 131 132 /* LED */ 133 #define METHOD_MLED "MLED" 134 #define METHOD_TLED "TLED" 135 #define METHOD_RLED "RLED" /* W1JC */ 136 #define METHOD_PLED "PLED" /* A7J */ 137 #define METHOD_GLED "GLED" /* G1, G2 (probably) */ 138 139 /* LEDD */ 140 #define METHOD_LEDD "SLCM" 141 142 /* 143 * Bluetooth and WLAN 144 * WLED and BLED are not handled like other XLED, because in some dsdt 145 * they also control the WLAN/Bluetooth device. 146 */ 147 #define METHOD_WLAN "WLED" 148 #define METHOD_BLUETOOTH "BLED" 149 150 /* WWAN and WIMAX */ 151 #define METHOD_WWAN "GSMC" 152 #define METHOD_WIMAX "WMXC" 153 154 #define METHOD_WL_STATUS "RSTS" 155 156 /* Brightness */ 157 #define METHOD_BRIGHTNESS_SET "SPLV" 158 #define METHOD_BRIGHTNESS_GET "GPLV" 159 160 /* Display */ 161 #define METHOD_SWITCH_DISPLAY "SDSP" 162 163 #define METHOD_ALS_CONTROL "ALSC" /* Z71A Z71V */ 164 #define METHOD_ALS_LEVEL "ALSL" /* Z71A Z71V */ 165 166 /* GPS */ 167 /* R2H use different handle for GPS on/off */ 168 #define METHOD_GPS_ON "SDON" 169 #define METHOD_GPS_OFF "SDOF" 170 #define METHOD_GPS_STATUS "GPST" 171 172 /* Keyboard light */ 173 #define METHOD_KBD_LIGHT_SET "SLKB" 174 #define METHOD_KBD_LIGHT_GET "GLKB" 175 176 /* 177 * Define a specific led structure to keep the main structure clean 178 */ 179 struct asus_led { 180 int wk; 181 struct work_struct work; 182 struct led_classdev led; 183 struct asus_laptop *asus; 184 const char *method; 185 }; 186 187 /* 188 * This is the main structure, we can use it to store anything interesting 189 * about the hotk device 190 */ 191 struct asus_laptop { 192 char *name; /* laptop name */ 193 194 struct acpi_table_header *dsdt_info; 195 struct platform_device *platform_device; 196 struct acpi_device *device; /* the device we are in */ 197 struct backlight_device *backlight_device; 198 199 struct input_dev *inputdev; 200 struct key_entry *keymap; 201 202 struct asus_led mled; 203 struct asus_led tled; 204 struct asus_led rled; 205 struct asus_led pled; 206 struct asus_led gled; 207 struct asus_led kled; 208 struct workqueue_struct *led_workqueue; 209 210 int wireless_status; 211 bool have_rsts; 212 213 struct rfkill *gps_rfkill; 214 215 acpi_handle handle; /* the handle of the hotk device */ 216 u32 ledd_status; /* status of the LED display */ 217 u8 light_level; /* light sensor level */ 218 u8 light_switch; /* light sensor switch value */ 219 u16 event_count[128]; /* count for each event TODO make this better */ 220 }; 221 222 static const struct key_entry asus_keymap[] = { 223 /* Lenovo SL Specific keycodes */ 224 {KE_KEY, 0x02, { KEY_SCREENLOCK } }, 225 {KE_KEY, 0x05, { KEY_WLAN } }, 226 {KE_KEY, 0x08, { KEY_F13 } }, 227 {KE_KEY, 0x17, { KEY_ZOOM } }, 228 {KE_KEY, 0x1f, { KEY_BATTERY } }, 229 /* End of Lenovo SL Specific keycodes */ 230 {KE_KEY, 0x30, { KEY_VOLUMEUP } }, 231 {KE_KEY, 0x31, { KEY_VOLUMEDOWN } }, 232 {KE_KEY, 0x32, { KEY_MUTE } }, 233 {KE_KEY, 0x33, { KEY_SWITCHVIDEOMODE } }, 234 {KE_KEY, 0x34, { KEY_SWITCHVIDEOMODE } }, 235 {KE_KEY, 0x40, { KEY_PREVIOUSSONG } }, 236 {KE_KEY, 0x41, { KEY_NEXTSONG } }, 237 {KE_KEY, 0x43, { KEY_STOPCD } }, 238 {KE_KEY, 0x45, { KEY_PLAYPAUSE } }, 239 {KE_KEY, 0x4c, { KEY_MEDIA } }, 240 {KE_KEY, 0x50, { KEY_EMAIL } }, 241 {KE_KEY, 0x51, { KEY_WWW } }, 242 {KE_KEY, 0x55, { KEY_CALC } }, 243 {KE_KEY, 0x5C, { KEY_SCREENLOCK } }, /* Screenlock */ 244 {KE_KEY, 0x5D, { KEY_WLAN } }, 245 {KE_KEY, 0x5E, { KEY_WLAN } }, 246 {KE_KEY, 0x5F, { KEY_WLAN } }, 247 {KE_KEY, 0x60, { KEY_SWITCHVIDEOMODE } }, 248 {KE_KEY, 0x61, { KEY_SWITCHVIDEOMODE } }, 249 {KE_KEY, 0x62, { KEY_SWITCHVIDEOMODE } }, 250 {KE_KEY, 0x63, { KEY_SWITCHVIDEOMODE } }, 251 {KE_KEY, 0x6B, { KEY_F13 } }, /* Lock Touchpad */ 252 {KE_KEY, 0x7E, { KEY_BLUETOOTH } }, 253 {KE_KEY, 0x7D, { KEY_BLUETOOTH } }, 254 {KE_KEY, 0x82, { KEY_CAMERA } }, 255 {KE_KEY, 0x88, { KEY_WLAN } }, 256 {KE_KEY, 0x8A, { KEY_PROG1 } }, 257 {KE_KEY, 0x95, { KEY_MEDIA } }, 258 {KE_KEY, 0x99, { KEY_PHONE } }, 259 {KE_KEY, 0xc4, { KEY_KBDILLUMUP } }, 260 {KE_KEY, 0xc5, { KEY_KBDILLUMDOWN } }, 261 {KE_KEY, 0xb5, { KEY_CALC } }, 262 {KE_END, 0}, 263 }; 264 265 266 /* 267 * This function evaluates an ACPI method, given an int as parameter, the 268 * method is searched within the scope of the handle, can be NULL. The output 269 * of the method is written is output, which can also be NULL 270 * 271 * returns 0 if write is successful, -1 else. 272 */ 273 static int write_acpi_int_ret(acpi_handle handle, const char *method, int val, 274 struct acpi_buffer *output) 275 { 276 struct acpi_object_list params; /* list of input parameters (an int) */ 277 union acpi_object in_obj; /* the only param we use */ 278 acpi_status status; 279 280 if (!handle) 281 return -1; 282 283 params.count = 1; 284 params.pointer = &in_obj; 285 in_obj.type = ACPI_TYPE_INTEGER; 286 in_obj.integer.value = val; 287 288 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); 289 if (status == AE_OK) 290 return 0; 291 else 292 return -1; 293 } 294 295 static int write_acpi_int(acpi_handle handle, const char *method, int val) 296 { 297 return write_acpi_int_ret(handle, method, val, NULL); 298 } 299 300 static int acpi_check_handle(acpi_handle handle, const char *method, 301 acpi_handle *ret) 302 { 303 acpi_status status; 304 305 if (method == NULL) 306 return -ENODEV; 307 308 if (ret) 309 status = acpi_get_handle(handle, (char *)method, 310 ret); 311 else { 312 acpi_handle dummy; 313 314 status = acpi_get_handle(handle, (char *)method, 315 &dummy); 316 } 317 318 if (status != AE_OK) { 319 if (ret) 320 pr_warn("Error finding %s\n", method); 321 return -ENODEV; 322 } 323 return 0; 324 } 325 326 /* Generic LED function */ 327 static int asus_led_set(struct asus_laptop *asus, const char *method, 328 int value) 329 { 330 if (!strcmp(method, METHOD_MLED)) 331 value = !value; 332 else if (!strcmp(method, METHOD_GLED)) 333 value = !value + 1; 334 else 335 value = !!value; 336 337 return write_acpi_int(asus->handle, method, value); 338 } 339 340 /* 341 * LEDs 342 */ 343 /* /sys/class/led handlers */ 344 static void asus_led_cdev_set(struct led_classdev *led_cdev, 345 enum led_brightness value) 346 { 347 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 348 struct asus_laptop *asus = led->asus; 349 350 led->wk = !!value; 351 queue_work(asus->led_workqueue, &led->work); 352 } 353 354 static void asus_led_cdev_update(struct work_struct *work) 355 { 356 struct asus_led *led = container_of(work, struct asus_led, work); 357 struct asus_laptop *asus = led->asus; 358 359 asus_led_set(asus, led->method, led->wk); 360 } 361 362 static enum led_brightness asus_led_cdev_get(struct led_classdev *led_cdev) 363 { 364 return led_cdev->brightness; 365 } 366 367 /* 368 * Keyboard backlight (also a LED) 369 */ 370 static int asus_kled_lvl(struct asus_laptop *asus) 371 { 372 unsigned long long kblv; 373 struct acpi_object_list params; 374 union acpi_object in_obj; 375 acpi_status rv; 376 377 params.count = 1; 378 params.pointer = &in_obj; 379 in_obj.type = ACPI_TYPE_INTEGER; 380 in_obj.integer.value = 2; 381 382 rv = acpi_evaluate_integer(asus->handle, METHOD_KBD_LIGHT_GET, 383 ¶ms, &kblv); 384 if (ACPI_FAILURE(rv)) { 385 pr_warn("Error reading kled level\n"); 386 return -ENODEV; 387 } 388 return kblv; 389 } 390 391 static int asus_kled_set(struct asus_laptop *asus, int kblv) 392 { 393 if (kblv > 0) 394 kblv = (1 << 7) | (kblv & 0x7F); 395 else 396 kblv = 0; 397 398 if (write_acpi_int(asus->handle, METHOD_KBD_LIGHT_SET, kblv)) { 399 pr_warn("Keyboard LED display write failed\n"); 400 return -EINVAL; 401 } 402 return 0; 403 } 404 405 static void asus_kled_cdev_set(struct led_classdev *led_cdev, 406 enum led_brightness value) 407 { 408 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 409 struct asus_laptop *asus = led->asus; 410 411 led->wk = value; 412 queue_work(asus->led_workqueue, &led->work); 413 } 414 415 static void asus_kled_cdev_update(struct work_struct *work) 416 { 417 struct asus_led *led = container_of(work, struct asus_led, work); 418 struct asus_laptop *asus = led->asus; 419 420 asus_kled_set(asus, led->wk); 421 } 422 423 static enum led_brightness asus_kled_cdev_get(struct led_classdev *led_cdev) 424 { 425 struct asus_led *led = container_of(led_cdev, struct asus_led, led); 426 struct asus_laptop *asus = led->asus; 427 428 return asus_kled_lvl(asus); 429 } 430 431 static void asus_led_exit(struct asus_laptop *asus) 432 { 433 if (asus->mled.led.dev) 434 led_classdev_unregister(&asus->mled.led); 435 if (asus->tled.led.dev) 436 led_classdev_unregister(&asus->tled.led); 437 if (asus->pled.led.dev) 438 led_classdev_unregister(&asus->pled.led); 439 if (asus->rled.led.dev) 440 led_classdev_unregister(&asus->rled.led); 441 if (asus->gled.led.dev) 442 led_classdev_unregister(&asus->gled.led); 443 if (asus->kled.led.dev) 444 led_classdev_unregister(&asus->kled.led); 445 if (asus->led_workqueue) { 446 destroy_workqueue(asus->led_workqueue); 447 asus->led_workqueue = NULL; 448 } 449 } 450 451 /* Ugly macro, need to fix that later */ 452 static int asus_led_register(struct asus_laptop *asus, 453 struct asus_led *led, 454 const char *name, const char *method) 455 { 456 struct led_classdev *led_cdev = &led->led; 457 458 if (!method || acpi_check_handle(asus->handle, method, NULL)) 459 return 0; /* Led not present */ 460 461 led->asus = asus; 462 led->method = method; 463 464 INIT_WORK(&led->work, asus_led_cdev_update); 465 led_cdev->name = name; 466 led_cdev->brightness_set = asus_led_cdev_set; 467 led_cdev->brightness_get = asus_led_cdev_get; 468 led_cdev->max_brightness = 1; 469 return led_classdev_register(&asus->platform_device->dev, led_cdev); 470 } 471 472 static int asus_led_init(struct asus_laptop *asus) 473 { 474 int r; 475 476 /* 477 * Functions that actually update the LED's are called from a 478 * workqueue. By doing this as separate work rather than when the LED 479 * subsystem asks, we avoid messing with the Asus ACPI stuff during a 480 * potentially bad time, such as a timer interrupt. 481 */ 482 asus->led_workqueue = create_singlethread_workqueue("led_workqueue"); 483 if (!asus->led_workqueue) 484 return -ENOMEM; 485 486 r = asus_led_register(asus, &asus->mled, "asus::mail", METHOD_MLED); 487 if (r) 488 goto error; 489 r = asus_led_register(asus, &asus->tled, "asus::touchpad", METHOD_TLED); 490 if (r) 491 goto error; 492 r = asus_led_register(asus, &asus->rled, "asus::record", METHOD_RLED); 493 if (r) 494 goto error; 495 r = asus_led_register(asus, &asus->pled, "asus::phone", METHOD_PLED); 496 if (r) 497 goto error; 498 r = asus_led_register(asus, &asus->gled, "asus::gaming", METHOD_GLED); 499 if (r) 500 goto error; 501 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL) && 502 !acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_GET, NULL)) { 503 struct asus_led *led = &asus->kled; 504 struct led_classdev *cdev = &led->led; 505 506 led->asus = asus; 507 508 INIT_WORK(&led->work, asus_kled_cdev_update); 509 cdev->name = "asus::kbd_backlight"; 510 cdev->brightness_set = asus_kled_cdev_set; 511 cdev->brightness_get = asus_kled_cdev_get; 512 cdev->max_brightness = 3; 513 r = led_classdev_register(&asus->platform_device->dev, cdev); 514 } 515 error: 516 if (r) 517 asus_led_exit(asus); 518 return r; 519 } 520 521 /* 522 * Backlight device 523 */ 524 static int asus_read_brightness(struct backlight_device *bd) 525 { 526 struct asus_laptop *asus = bl_get_data(bd); 527 unsigned long long value; 528 acpi_status rv = AE_OK; 529 530 rv = acpi_evaluate_integer(asus->handle, METHOD_BRIGHTNESS_GET, 531 NULL, &value); 532 if (ACPI_FAILURE(rv)) 533 pr_warn("Error reading brightness\n"); 534 535 return value; 536 } 537 538 static int asus_set_brightness(struct backlight_device *bd, int value) 539 { 540 struct asus_laptop *asus = bl_get_data(bd); 541 542 if (write_acpi_int(asus->handle, METHOD_BRIGHTNESS_SET, value)) { 543 pr_warn("Error changing brightness\n"); 544 return -EIO; 545 } 546 return 0; 547 } 548 549 static int update_bl_status(struct backlight_device *bd) 550 { 551 int value = bd->props.brightness; 552 553 return asus_set_brightness(bd, value); 554 } 555 556 static const struct backlight_ops asusbl_ops = { 557 .get_brightness = asus_read_brightness, 558 .update_status = update_bl_status, 559 }; 560 561 static int asus_backlight_notify(struct asus_laptop *asus) 562 { 563 struct backlight_device *bd = asus->backlight_device; 564 int old = bd->props.brightness; 565 566 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); 567 568 return old; 569 } 570 571 static int asus_backlight_init(struct asus_laptop *asus) 572 { 573 struct backlight_device *bd; 574 struct backlight_properties props; 575 576 if (acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) || 577 acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL)) 578 return 0; 579 580 memset(&props, 0, sizeof(struct backlight_properties)); 581 props.max_brightness = 15; 582 props.type = BACKLIGHT_PLATFORM; 583 584 bd = backlight_device_register(ASUS_LAPTOP_FILE, 585 &asus->platform_device->dev, asus, 586 &asusbl_ops, &props); 587 if (IS_ERR(bd)) { 588 pr_err("Could not register asus backlight device\n"); 589 asus->backlight_device = NULL; 590 return PTR_ERR(bd); 591 } 592 593 asus->backlight_device = bd; 594 bd->props.brightness = asus_read_brightness(bd); 595 bd->props.power = FB_BLANK_UNBLANK; 596 backlight_update_status(bd); 597 return 0; 598 } 599 600 static void asus_backlight_exit(struct asus_laptop *asus) 601 { 602 if (asus->backlight_device) 603 backlight_device_unregister(asus->backlight_device); 604 asus->backlight_device = NULL; 605 } 606 607 /* 608 * Platform device handlers 609 */ 610 611 /* 612 * We write our info in page, we begin at offset off and cannot write more 613 * than count bytes. We set eof to 1 if we handle those 2 values. We return the 614 * number of bytes written in page 615 */ 616 static ssize_t show_infos(struct device *dev, 617 struct device_attribute *attr, char *page) 618 { 619 struct asus_laptop *asus = dev_get_drvdata(dev); 620 int len = 0; 621 unsigned long long temp; 622 char buf[16]; /* enough for all info */ 623 acpi_status rv = AE_OK; 624 625 /* 626 * We use the easy way, we don't care of off and count, 627 * so we don't set eof to 1 628 */ 629 630 len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n"); 631 len += sprintf(page + len, "Model reference : %s\n", asus->name); 632 /* 633 * The SFUN method probably allows the original driver to get the list 634 * of features supported by a given model. For now, 0x0100 or 0x0800 635 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. 636 * The significance of others is yet to be found. 637 */ 638 rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp); 639 if (!ACPI_FAILURE(rv)) 640 len += sprintf(page + len, "SFUN value : %#x\n", 641 (uint) temp); 642 /* 643 * The HWRS method return informations about the hardware. 644 * 0x80 bit is for WLAN, 0x100 for Bluetooth. 645 * The significance of others is yet to be found. 646 * If we don't find the method, we assume the device are present. 647 */ 648 rv = acpi_evaluate_integer(asus->handle, "HRWS", NULL, &temp); 649 if (!ACPI_FAILURE(rv)) 650 len += sprintf(page + len, "HRWS value : %#x\n", 651 (uint) temp); 652 /* 653 * Another value for userspace: the ASYM method returns 0x02 for 654 * battery low and 0x04 for battery critical, its readings tend to be 655 * more accurate than those provided by _BST. 656 * Note: since not all the laptops provide this method, errors are 657 * silently ignored. 658 */ 659 rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp); 660 if (!ACPI_FAILURE(rv)) 661 len += sprintf(page + len, "ASYM value : %#x\n", 662 (uint) temp); 663 if (asus->dsdt_info) { 664 snprintf(buf, 16, "%d", asus->dsdt_info->length); 665 len += sprintf(page + len, "DSDT length : %s\n", buf); 666 snprintf(buf, 16, "%d", asus->dsdt_info->checksum); 667 len += sprintf(page + len, "DSDT checksum : %s\n", buf); 668 snprintf(buf, 16, "%d", asus->dsdt_info->revision); 669 len += sprintf(page + len, "DSDT revision : %s\n", buf); 670 snprintf(buf, 7, "%s", asus->dsdt_info->oem_id); 671 len += sprintf(page + len, "OEM id : %s\n", buf); 672 snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id); 673 len += sprintf(page + len, "OEM table id : %s\n", buf); 674 snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision); 675 len += sprintf(page + len, "OEM revision : 0x%s\n", buf); 676 snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id); 677 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); 678 snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision); 679 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); 680 } 681 682 return len; 683 } 684 685 static int parse_arg(const char *buf, unsigned long count, int *val) 686 { 687 if (!count) 688 return 0; 689 if (count > 31) 690 return -EINVAL; 691 if (sscanf(buf, "%i", val) != 1) 692 return -EINVAL; 693 return count; 694 } 695 696 static ssize_t sysfs_acpi_set(struct asus_laptop *asus, 697 const char *buf, size_t count, 698 const char *method) 699 { 700 int rv, value; 701 int out = 0; 702 703 rv = parse_arg(buf, count, &value); 704 if (rv > 0) 705 out = value ? 1 : 0; 706 707 if (write_acpi_int(asus->handle, method, value)) 708 return -ENODEV; 709 return rv; 710 } 711 712 /* 713 * LEDD display 714 */ 715 static ssize_t show_ledd(struct device *dev, 716 struct device_attribute *attr, char *buf) 717 { 718 struct asus_laptop *asus = dev_get_drvdata(dev); 719 720 return sprintf(buf, "0x%08x\n", asus->ledd_status); 721 } 722 723 static ssize_t store_ledd(struct device *dev, struct device_attribute *attr, 724 const char *buf, size_t count) 725 { 726 struct asus_laptop *asus = dev_get_drvdata(dev); 727 int rv, value; 728 729 rv = parse_arg(buf, count, &value); 730 if (rv > 0) { 731 if (write_acpi_int(asus->handle, METHOD_LEDD, value)) { 732 pr_warn("LED display write failed\n"); 733 return -ENODEV; 734 } 735 asus->ledd_status = (u32) value; 736 } 737 return rv; 738 } 739 740 /* 741 * Wireless 742 */ 743 static int asus_wireless_status(struct asus_laptop *asus, int mask) 744 { 745 unsigned long long status; 746 acpi_status rv = AE_OK; 747 748 if (!asus->have_rsts) 749 return (asus->wireless_status & mask) ? 1 : 0; 750 751 rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS, 752 NULL, &status); 753 if (ACPI_FAILURE(rv)) { 754 pr_warn("Error reading Wireless status\n"); 755 return -EINVAL; 756 } 757 return !!(status & mask); 758 } 759 760 /* 761 * WLAN 762 */ 763 static int asus_wlan_set(struct asus_laptop *asus, int status) 764 { 765 if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) { 766 pr_warn("Error setting wlan status to %d\n", status); 767 return -EIO; 768 } 769 return 0; 770 } 771 772 static ssize_t show_wlan(struct device *dev, 773 struct device_attribute *attr, char *buf) 774 { 775 struct asus_laptop *asus = dev_get_drvdata(dev); 776 777 return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS)); 778 } 779 780 static ssize_t store_wlan(struct device *dev, struct device_attribute *attr, 781 const char *buf, size_t count) 782 { 783 struct asus_laptop *asus = dev_get_drvdata(dev); 784 785 return sysfs_acpi_set(asus, buf, count, METHOD_WLAN); 786 } 787 788 /* 789 * Bluetooth 790 */ 791 static int asus_bluetooth_set(struct asus_laptop *asus, int status) 792 { 793 if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) { 794 pr_warn("Error setting bluetooth status to %d\n", status); 795 return -EIO; 796 } 797 return 0; 798 } 799 800 static ssize_t show_bluetooth(struct device *dev, 801 struct device_attribute *attr, char *buf) 802 { 803 struct asus_laptop *asus = dev_get_drvdata(dev); 804 805 return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS)); 806 } 807 808 static ssize_t store_bluetooth(struct device *dev, 809 struct device_attribute *attr, const char *buf, 810 size_t count) 811 { 812 struct asus_laptop *asus = dev_get_drvdata(dev); 813 814 return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH); 815 } 816 817 /* 818 * Wimax 819 */ 820 static int asus_wimax_set(struct asus_laptop *asus, int status) 821 { 822 if (write_acpi_int(asus->handle, METHOD_WIMAX, !!status)) { 823 pr_warn("Error setting wimax status to %d\n", status); 824 return -EIO; 825 } 826 return 0; 827 } 828 829 static ssize_t show_wimax(struct device *dev, 830 struct device_attribute *attr, char *buf) 831 { 832 struct asus_laptop *asus = dev_get_drvdata(dev); 833 834 return sprintf(buf, "%d\n", asus_wireless_status(asus, WM_RSTS)); 835 } 836 837 static ssize_t store_wimax(struct device *dev, 838 struct device_attribute *attr, const char *buf, 839 size_t count) 840 { 841 struct asus_laptop *asus = dev_get_drvdata(dev); 842 843 return sysfs_acpi_set(asus, buf, count, METHOD_WIMAX); 844 } 845 846 /* 847 * Wwan 848 */ 849 static int asus_wwan_set(struct asus_laptop *asus, int status) 850 { 851 if (write_acpi_int(asus->handle, METHOD_WWAN, !!status)) { 852 pr_warn("Error setting wwan status to %d\n", status); 853 return -EIO; 854 } 855 return 0; 856 } 857 858 static ssize_t show_wwan(struct device *dev, 859 struct device_attribute *attr, char *buf) 860 { 861 struct asus_laptop *asus = dev_get_drvdata(dev); 862 863 return sprintf(buf, "%d\n", asus_wireless_status(asus, WW_RSTS)); 864 } 865 866 static ssize_t store_wwan(struct device *dev, 867 struct device_attribute *attr, const char *buf, 868 size_t count) 869 { 870 struct asus_laptop *asus = dev_get_drvdata(dev); 871 872 return sysfs_acpi_set(asus, buf, count, METHOD_WWAN); 873 } 874 875 /* 876 * Display 877 */ 878 static void asus_set_display(struct asus_laptop *asus, int value) 879 { 880 /* no sanity check needed for now */ 881 if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value)) 882 pr_warn("Error setting display\n"); 883 return; 884 } 885 886 /* 887 * Experimental support for display switching. As of now: 1 should activate 888 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI. 889 * Any combination (bitwise) of these will suffice. I never actually tested 4 890 * displays hooked up simultaneously, so be warned. See the acpi4asus README 891 * for more info. 892 */ 893 static ssize_t store_disp(struct device *dev, struct device_attribute *attr, 894 const char *buf, size_t count) 895 { 896 struct asus_laptop *asus = dev_get_drvdata(dev); 897 int rv, value; 898 899 rv = parse_arg(buf, count, &value); 900 if (rv > 0) 901 asus_set_display(asus, value); 902 return rv; 903 } 904 905 /* 906 * Light Sens 907 */ 908 static void asus_als_switch(struct asus_laptop *asus, int value) 909 { 910 if (write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value)) 911 pr_warn("Error setting light sensor switch\n"); 912 asus->light_switch = value; 913 } 914 915 static ssize_t show_lssw(struct device *dev, 916 struct device_attribute *attr, char *buf) 917 { 918 struct asus_laptop *asus = dev_get_drvdata(dev); 919 920 return sprintf(buf, "%d\n", asus->light_switch); 921 } 922 923 static ssize_t store_lssw(struct device *dev, struct device_attribute *attr, 924 const char *buf, size_t count) 925 { 926 struct asus_laptop *asus = dev_get_drvdata(dev); 927 int rv, value; 928 929 rv = parse_arg(buf, count, &value); 930 if (rv > 0) 931 asus_als_switch(asus, value ? 1 : 0); 932 933 return rv; 934 } 935 936 static void asus_als_level(struct asus_laptop *asus, int value) 937 { 938 if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value)) 939 pr_warn("Error setting light sensor level\n"); 940 asus->light_level = value; 941 } 942 943 static ssize_t show_lslvl(struct device *dev, 944 struct device_attribute *attr, char *buf) 945 { 946 struct asus_laptop *asus = dev_get_drvdata(dev); 947 948 return sprintf(buf, "%d\n", asus->light_level); 949 } 950 951 static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr, 952 const char *buf, size_t count) 953 { 954 struct asus_laptop *asus = dev_get_drvdata(dev); 955 int rv, value; 956 957 rv = parse_arg(buf, count, &value); 958 if (rv > 0) { 959 value = (0 < value) ? ((15 < value) ? 15 : value) : 0; 960 /* 0 <= value <= 15 */ 961 asus_als_level(asus, value); 962 } 963 964 return rv; 965 } 966 967 /* 968 * GPS 969 */ 970 static int asus_gps_status(struct asus_laptop *asus) 971 { 972 unsigned long long status; 973 acpi_status rv = AE_OK; 974 975 rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS, 976 NULL, &status); 977 if (ACPI_FAILURE(rv)) { 978 pr_warn("Error reading GPS status\n"); 979 return -ENODEV; 980 } 981 return !!status; 982 } 983 984 static int asus_gps_switch(struct asus_laptop *asus, int status) 985 { 986 const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF; 987 988 if (write_acpi_int(asus->handle, meth, 0x02)) 989 return -ENODEV; 990 return 0; 991 } 992 993 static ssize_t show_gps(struct device *dev, 994 struct device_attribute *attr, char *buf) 995 { 996 struct asus_laptop *asus = dev_get_drvdata(dev); 997 998 return sprintf(buf, "%d\n", asus_gps_status(asus)); 999 } 1000 1001 static ssize_t store_gps(struct device *dev, struct device_attribute *attr, 1002 const char *buf, size_t count) 1003 { 1004 struct asus_laptop *asus = dev_get_drvdata(dev); 1005 int rv, value; 1006 int ret; 1007 1008 rv = parse_arg(buf, count, &value); 1009 if (rv <= 0) 1010 return -EINVAL; 1011 ret = asus_gps_switch(asus, !!value); 1012 if (ret) 1013 return ret; 1014 rfkill_set_sw_state(asus->gps_rfkill, !value); 1015 return rv; 1016 } 1017 1018 /* 1019 * rfkill 1020 */ 1021 static int asus_gps_rfkill_set(void *data, bool blocked) 1022 { 1023 struct asus_laptop *asus = data; 1024 1025 return asus_gps_switch(asus, !blocked); 1026 } 1027 1028 static const struct rfkill_ops asus_gps_rfkill_ops = { 1029 .set_block = asus_gps_rfkill_set, 1030 }; 1031 1032 static void asus_rfkill_exit(struct asus_laptop *asus) 1033 { 1034 if (asus->gps_rfkill) { 1035 rfkill_unregister(asus->gps_rfkill); 1036 rfkill_destroy(asus->gps_rfkill); 1037 asus->gps_rfkill = NULL; 1038 } 1039 } 1040 1041 static int asus_rfkill_init(struct asus_laptop *asus) 1042 { 1043 int result; 1044 1045 if (acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) || 1046 acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) || 1047 acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL)) 1048 return 0; 1049 1050 asus->gps_rfkill = rfkill_alloc("asus-gps", &asus->platform_device->dev, 1051 RFKILL_TYPE_GPS, 1052 &asus_gps_rfkill_ops, asus); 1053 if (!asus->gps_rfkill) 1054 return -EINVAL; 1055 1056 result = rfkill_register(asus->gps_rfkill); 1057 if (result) { 1058 rfkill_destroy(asus->gps_rfkill); 1059 asus->gps_rfkill = NULL; 1060 } 1061 1062 return result; 1063 } 1064 1065 /* 1066 * Input device (i.e. hotkeys) 1067 */ 1068 static void asus_input_notify(struct asus_laptop *asus, int event) 1069 { 1070 if (asus->inputdev) 1071 sparse_keymap_report_event(asus->inputdev, event, 1, true); 1072 } 1073 1074 static int asus_input_init(struct asus_laptop *asus) 1075 { 1076 struct input_dev *input; 1077 int error; 1078 1079 input = input_allocate_device(); 1080 if (!input) { 1081 pr_info("Unable to allocate input device\n"); 1082 return -ENOMEM; 1083 } 1084 input->name = "Asus Laptop extra buttons"; 1085 input->phys = ASUS_LAPTOP_FILE "/input0"; 1086 input->id.bustype = BUS_HOST; 1087 input->dev.parent = &asus->platform_device->dev; 1088 1089 error = sparse_keymap_setup(input, asus_keymap, NULL); 1090 if (error) { 1091 pr_err("Unable to setup input device keymap\n"); 1092 goto err_free_dev; 1093 } 1094 error = input_register_device(input); 1095 if (error) { 1096 pr_info("Unable to register input device\n"); 1097 goto err_free_keymap; 1098 } 1099 1100 asus->inputdev = input; 1101 return 0; 1102 1103 err_free_keymap: 1104 sparse_keymap_free(input); 1105 err_free_dev: 1106 input_free_device(input); 1107 return error; 1108 } 1109 1110 static void asus_input_exit(struct asus_laptop *asus) 1111 { 1112 if (asus->inputdev) { 1113 sparse_keymap_free(asus->inputdev); 1114 input_unregister_device(asus->inputdev); 1115 } 1116 asus->inputdev = NULL; 1117 } 1118 1119 /* 1120 * ACPI driver 1121 */ 1122 static void asus_acpi_notify(struct acpi_device *device, u32 event) 1123 { 1124 struct asus_laptop *asus = acpi_driver_data(device); 1125 u16 count; 1126 1127 /* TODO Find a better way to handle events count. */ 1128 count = asus->event_count[event % 128]++; 1129 acpi_bus_generate_proc_event(asus->device, event, count); 1130 acpi_bus_generate_netlink_event(asus->device->pnp.device_class, 1131 dev_name(&asus->device->dev), event, 1132 count); 1133 1134 /* Brightness events are special */ 1135 if (event >= ATKD_BR_MIN && event <= ATKD_BR_MAX) { 1136 1137 /* Ignore them completely if the acpi video driver is used */ 1138 if (asus->backlight_device != NULL) { 1139 /* Update the backlight device. */ 1140 asus_backlight_notify(asus); 1141 } 1142 return ; 1143 } 1144 asus_input_notify(asus, event); 1145 } 1146 1147 static DEVICE_ATTR(infos, S_IRUGO, show_infos, NULL); 1148 static DEVICE_ATTR(wlan, S_IRUGO | S_IWUSR, show_wlan, store_wlan); 1149 static DEVICE_ATTR(bluetooth, S_IRUGO | S_IWUSR, 1150 show_bluetooth, store_bluetooth); 1151 static DEVICE_ATTR(wimax, S_IRUGO | S_IWUSR, show_wimax, store_wimax); 1152 static DEVICE_ATTR(wwan, S_IRUGO | S_IWUSR, show_wwan, store_wwan); 1153 static DEVICE_ATTR(display, S_IWUSR, NULL, store_disp); 1154 static DEVICE_ATTR(ledd, S_IRUGO | S_IWUSR, show_ledd, store_ledd); 1155 static DEVICE_ATTR(ls_level, S_IRUGO | S_IWUSR, show_lslvl, store_lslvl); 1156 static DEVICE_ATTR(ls_switch, S_IRUGO | S_IWUSR, show_lssw, store_lssw); 1157 static DEVICE_ATTR(gps, S_IRUGO | S_IWUSR, show_gps, store_gps); 1158 1159 static struct attribute *asus_attributes[] = { 1160 &dev_attr_infos.attr, 1161 &dev_attr_wlan.attr, 1162 &dev_attr_bluetooth.attr, 1163 &dev_attr_wimax.attr, 1164 &dev_attr_wwan.attr, 1165 &dev_attr_display.attr, 1166 &dev_attr_ledd.attr, 1167 &dev_attr_ls_level.attr, 1168 &dev_attr_ls_switch.attr, 1169 &dev_attr_gps.attr, 1170 NULL 1171 }; 1172 1173 static mode_t asus_sysfs_is_visible(struct kobject *kobj, 1174 struct attribute *attr, 1175 int idx) 1176 { 1177 struct device *dev = container_of(kobj, struct device, kobj); 1178 struct platform_device *pdev = to_platform_device(dev); 1179 struct asus_laptop *asus = platform_get_drvdata(pdev); 1180 acpi_handle handle = asus->handle; 1181 bool supported; 1182 1183 if (attr == &dev_attr_wlan.attr) { 1184 supported = !acpi_check_handle(handle, METHOD_WLAN, NULL); 1185 1186 } else if (attr == &dev_attr_bluetooth.attr) { 1187 supported = !acpi_check_handle(handle, METHOD_BLUETOOTH, NULL); 1188 1189 } else if (attr == &dev_attr_display.attr) { 1190 supported = !acpi_check_handle(handle, METHOD_SWITCH_DISPLAY, NULL); 1191 1192 } else if (attr == &dev_attr_wimax.attr) { 1193 supported = 1194 !acpi_check_handle(asus->handle, METHOD_WIMAX, NULL); 1195 1196 } else if (attr == &dev_attr_wwan.attr) { 1197 supported = !acpi_check_handle(asus->handle, METHOD_WWAN, NULL); 1198 1199 } else if (attr == &dev_attr_ledd.attr) { 1200 supported = !acpi_check_handle(handle, METHOD_LEDD, NULL); 1201 1202 } else if (attr == &dev_attr_ls_switch.attr || 1203 attr == &dev_attr_ls_level.attr) { 1204 supported = !acpi_check_handle(handle, METHOD_ALS_CONTROL, NULL) && 1205 !acpi_check_handle(handle, METHOD_ALS_LEVEL, NULL); 1206 1207 } else if (attr == &dev_attr_gps.attr) { 1208 supported = !acpi_check_handle(handle, METHOD_GPS_ON, NULL) && 1209 !acpi_check_handle(handle, METHOD_GPS_OFF, NULL) && 1210 !acpi_check_handle(handle, METHOD_GPS_STATUS, NULL); 1211 } else { 1212 supported = true; 1213 } 1214 1215 return supported ? attr->mode : 0; 1216 } 1217 1218 1219 static const struct attribute_group asus_attr_group = { 1220 .is_visible = asus_sysfs_is_visible, 1221 .attrs = asus_attributes, 1222 }; 1223 1224 static int asus_platform_init(struct asus_laptop *asus) 1225 { 1226 int result; 1227 1228 asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1); 1229 if (!asus->platform_device) 1230 return -ENOMEM; 1231 platform_set_drvdata(asus->platform_device, asus); 1232 1233 result = platform_device_add(asus->platform_device); 1234 if (result) 1235 goto fail_platform_device; 1236 1237 result = sysfs_create_group(&asus->platform_device->dev.kobj, 1238 &asus_attr_group); 1239 if (result) 1240 goto fail_sysfs; 1241 1242 return 0; 1243 1244 fail_sysfs: 1245 platform_device_del(asus->platform_device); 1246 fail_platform_device: 1247 platform_device_put(asus->platform_device); 1248 return result; 1249 } 1250 1251 static void asus_platform_exit(struct asus_laptop *asus) 1252 { 1253 sysfs_remove_group(&asus->platform_device->dev.kobj, &asus_attr_group); 1254 platform_device_unregister(asus->platform_device); 1255 } 1256 1257 static struct platform_driver platform_driver = { 1258 .driver = { 1259 .name = ASUS_LAPTOP_FILE, 1260 .owner = THIS_MODULE, 1261 } 1262 }; 1263 1264 /* 1265 * This function is used to initialize the context with right values. In this 1266 * method, we can make all the detection we want, and modify the asus_laptop 1267 * struct 1268 */ 1269 static int asus_laptop_get_info(struct asus_laptop *asus) 1270 { 1271 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 1272 union acpi_object *model = NULL; 1273 unsigned long long bsts_result, hwrs_result; 1274 char *string = NULL; 1275 acpi_status status; 1276 1277 /* 1278 * Get DSDT headers early enough to allow for differentiating between 1279 * models, but late enough to allow acpi_bus_register_driver() to fail 1280 * before doing anything ACPI-specific. Should we encounter a machine, 1281 * which needs special handling (i.e. its hotkey device has a different 1282 * HID), this bit will be moved. 1283 */ 1284 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info); 1285 if (ACPI_FAILURE(status)) 1286 pr_warn("Couldn't get the DSDT table header\n"); 1287 1288 /* We have to write 0 on init this far for all ASUS models */ 1289 if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) { 1290 pr_err("Hotkey initialization failed\n"); 1291 return -ENODEV; 1292 } 1293 1294 /* This needs to be called for some laptops to init properly */ 1295 status = 1296 acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result); 1297 if (ACPI_FAILURE(status)) 1298 pr_warn("Error calling BSTS\n"); 1299 else if (bsts_result) 1300 pr_notice("BSTS called, 0x%02x returned\n", 1301 (uint) bsts_result); 1302 1303 /* This too ... */ 1304 if (write_acpi_int(asus->handle, "CWAP", wapf)) 1305 pr_err("Error calling CWAP(%d)\n", wapf); 1306 /* 1307 * Try to match the object returned by INIT to the specific model. 1308 * Handle every possible object (or the lack of thereof) the DSDT 1309 * writers might throw at us. When in trouble, we pass NULL to 1310 * asus_model_match() and try something completely different. 1311 */ 1312 if (buffer.pointer) { 1313 model = buffer.pointer; 1314 switch (model->type) { 1315 case ACPI_TYPE_STRING: 1316 string = model->string.pointer; 1317 break; 1318 case ACPI_TYPE_BUFFER: 1319 string = model->buffer.pointer; 1320 break; 1321 default: 1322 string = ""; 1323 break; 1324 } 1325 } 1326 asus->name = kstrdup(string, GFP_KERNEL); 1327 if (!asus->name) { 1328 kfree(buffer.pointer); 1329 return -ENOMEM; 1330 } 1331 1332 if (*string) 1333 pr_notice(" %s model detected\n", string); 1334 1335 /* 1336 * The HWRS method return informations about the hardware. 1337 * 0x80 bit is for WLAN, 0x100 for Bluetooth, 1338 * 0x40 for WWAN, 0x10 for WIMAX. 1339 * The significance of others is yet to be found. 1340 */ 1341 status = 1342 acpi_evaluate_integer(asus->handle, "HRWS", NULL, &hwrs_result); 1343 if (!ACPI_FAILURE(status)) 1344 pr_notice(" HRWS returned %x", (int)hwrs_result); 1345 1346 if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL)) 1347 asus->have_rsts = true; 1348 1349 kfree(model); 1350 1351 return AE_OK; 1352 } 1353 1354 static int __devinit asus_acpi_init(struct asus_laptop *asus) 1355 { 1356 int result = 0; 1357 1358 result = acpi_bus_get_status(asus->device); 1359 if (result) 1360 return result; 1361 if (!asus->device->status.present) { 1362 pr_err("Hotkey device not present, aborting\n"); 1363 return -ENODEV; 1364 } 1365 1366 result = asus_laptop_get_info(asus); 1367 if (result) 1368 return result; 1369 1370 /* WLED and BLED are on by default */ 1371 if (bluetooth_status >= 0) 1372 asus_bluetooth_set(asus, !!bluetooth_status); 1373 1374 if (wlan_status >= 0) 1375 asus_wlan_set(asus, !!wlan_status); 1376 1377 if (wimax_status >= 0) 1378 asus_wimax_set(asus, !!wimax_status); 1379 1380 if (wwan_status >= 0) 1381 asus_wwan_set(asus, !!wwan_status); 1382 1383 /* Keyboard Backlight is on by default */ 1384 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL)) 1385 asus_kled_set(asus, 1); 1386 1387 /* LED display is off by default */ 1388 asus->ledd_status = 0xFFF; 1389 1390 /* Set initial values of light sensor and level */ 1391 asus->light_switch = 0; /* Default to light sensor disabled */ 1392 asus->light_level = 5; /* level 5 for sensor sensitivity */ 1393 1394 if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) && 1395 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) { 1396 asus_als_switch(asus, asus->light_switch); 1397 asus_als_level(asus, asus->light_level); 1398 } 1399 1400 return result; 1401 } 1402 1403 static void __devinit asus_dmi_check(void) 1404 { 1405 const char *model; 1406 1407 model = dmi_get_system_info(DMI_PRODUCT_NAME); 1408 if (!model) 1409 return; 1410 1411 /* On L1400B WLED control the sound card, don't mess with it ... */ 1412 if (strncmp(model, "L1400B", 6) == 0) { 1413 wlan_status = -1; 1414 } 1415 } 1416 1417 static bool asus_device_present; 1418 1419 static int __devinit asus_acpi_add(struct acpi_device *device) 1420 { 1421 struct asus_laptop *asus; 1422 int result; 1423 1424 pr_notice("Asus Laptop Support version %s\n", 1425 ASUS_LAPTOP_VERSION); 1426 asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL); 1427 if (!asus) 1428 return -ENOMEM; 1429 asus->handle = device->handle; 1430 strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME); 1431 strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS); 1432 device->driver_data = asus; 1433 asus->device = device; 1434 1435 asus_dmi_check(); 1436 1437 result = asus_acpi_init(asus); 1438 if (result) 1439 goto fail_platform; 1440 1441 /* 1442 * Register the platform device first. It is used as a parent for the 1443 * sub-devices below. 1444 */ 1445 result = asus_platform_init(asus); 1446 if (result) 1447 goto fail_platform; 1448 1449 if (!acpi_video_backlight_support()) { 1450 result = asus_backlight_init(asus); 1451 if (result) 1452 goto fail_backlight; 1453 } else 1454 pr_info("Backlight controlled by ACPI video driver\n"); 1455 1456 result = asus_input_init(asus); 1457 if (result) 1458 goto fail_input; 1459 1460 result = asus_led_init(asus); 1461 if (result) 1462 goto fail_led; 1463 1464 result = asus_rfkill_init(asus); 1465 if (result) 1466 goto fail_rfkill; 1467 1468 asus_device_present = true; 1469 return 0; 1470 1471 fail_rfkill: 1472 asus_led_exit(asus); 1473 fail_led: 1474 asus_input_exit(asus); 1475 fail_input: 1476 asus_backlight_exit(asus); 1477 fail_backlight: 1478 asus_platform_exit(asus); 1479 fail_platform: 1480 kfree(asus->name); 1481 kfree(asus); 1482 1483 return result; 1484 } 1485 1486 static int asus_acpi_remove(struct acpi_device *device, int type) 1487 { 1488 struct asus_laptop *asus = acpi_driver_data(device); 1489 1490 asus_backlight_exit(asus); 1491 asus_rfkill_exit(asus); 1492 asus_led_exit(asus); 1493 asus_input_exit(asus); 1494 asus_platform_exit(asus); 1495 1496 kfree(asus->name); 1497 kfree(asus); 1498 return 0; 1499 } 1500 1501 static const struct acpi_device_id asus_device_ids[] = { 1502 {"ATK0100", 0}, 1503 {"ATK0101", 0}, 1504 {"", 0}, 1505 }; 1506 MODULE_DEVICE_TABLE(acpi, asus_device_ids); 1507 1508 static struct acpi_driver asus_acpi_driver = { 1509 .name = ASUS_LAPTOP_NAME, 1510 .class = ASUS_LAPTOP_CLASS, 1511 .owner = THIS_MODULE, 1512 .ids = asus_device_ids, 1513 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, 1514 .ops = { 1515 .add = asus_acpi_add, 1516 .remove = asus_acpi_remove, 1517 .notify = asus_acpi_notify, 1518 }, 1519 }; 1520 1521 static int __init asus_laptop_init(void) 1522 { 1523 int result; 1524 1525 result = platform_driver_register(&platform_driver); 1526 if (result < 0) 1527 return result; 1528 1529 result = acpi_bus_register_driver(&asus_acpi_driver); 1530 if (result < 0) 1531 goto fail_acpi_driver; 1532 if (!asus_device_present) { 1533 result = -ENODEV; 1534 goto fail_no_device; 1535 } 1536 return 0; 1537 1538 fail_no_device: 1539 acpi_bus_unregister_driver(&asus_acpi_driver); 1540 fail_acpi_driver: 1541 platform_driver_unregister(&platform_driver); 1542 return result; 1543 } 1544 1545 static void __exit asus_laptop_exit(void) 1546 { 1547 acpi_bus_unregister_driver(&asus_acpi_driver); 1548 platform_driver_unregister(&platform_driver); 1549 } 1550 1551 module_init(asus_laptop_init); 1552 module_exit(asus_laptop_exit); 1553