1 /* 2 * eepc-laptop.c - Asus Eee PC extras 3 * 4 * Based on asus_acpi.c as patched for the Eee PC by Asus: 5 * ftp://ftp.asus.com/pub/ASUS/EeePC/701/ASUS_ACPI_071126.rar 6 * Based on eee.c from eeepc-linux 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 19 #include <linux/kernel.h> 20 #include <linux/module.h> 21 #include <linux/init.h> 22 #include <linux/types.h> 23 #include <linux/platform_device.h> 24 #include <linux/backlight.h> 25 #include <linux/fb.h> 26 #include <linux/hwmon.h> 27 #include <linux/hwmon-sysfs.h> 28 #include <acpi/acpi_drivers.h> 29 #include <acpi/acpi_bus.h> 30 #include <linux/uaccess.h> 31 #include <linux/input.h> 32 #include <linux/rfkill.h> 33 #include <linux/pci.h> 34 35 #define EEEPC_LAPTOP_VERSION "0.1" 36 37 #define EEEPC_HOTK_NAME "Eee PC Hotkey Driver" 38 #define EEEPC_HOTK_FILE "eeepc" 39 #define EEEPC_HOTK_CLASS "hotkey" 40 #define EEEPC_HOTK_DEVICE_NAME "Hotkey" 41 #define EEEPC_HOTK_HID "ASUS010" 42 43 #define EEEPC_LOG EEEPC_HOTK_FILE ": " 44 #define EEEPC_ERR KERN_ERR EEEPC_LOG 45 #define EEEPC_WARNING KERN_WARNING EEEPC_LOG 46 #define EEEPC_NOTICE KERN_NOTICE EEEPC_LOG 47 #define EEEPC_INFO KERN_INFO EEEPC_LOG 48 49 /* 50 * Definitions for Asus EeePC 51 */ 52 #define NOTIFY_WLAN_ON 0x10 53 #define NOTIFY_BRN_MIN 0x20 54 #define NOTIFY_BRN_MAX 0x2f 55 56 enum { 57 DISABLE_ASL_WLAN = 0x0001, 58 DISABLE_ASL_BLUETOOTH = 0x0002, 59 DISABLE_ASL_IRDA = 0x0004, 60 DISABLE_ASL_CAMERA = 0x0008, 61 DISABLE_ASL_TV = 0x0010, 62 DISABLE_ASL_GPS = 0x0020, 63 DISABLE_ASL_DISPLAYSWITCH = 0x0040, 64 DISABLE_ASL_MODEM = 0x0080, 65 DISABLE_ASL_CARDREADER = 0x0100 66 }; 67 68 enum { 69 CM_ASL_WLAN = 0, 70 CM_ASL_BLUETOOTH, 71 CM_ASL_IRDA, 72 CM_ASL_1394, 73 CM_ASL_CAMERA, 74 CM_ASL_TV, 75 CM_ASL_GPS, 76 CM_ASL_DVDROM, 77 CM_ASL_DISPLAYSWITCH, 78 CM_ASL_PANELBRIGHT, 79 CM_ASL_BIOSFLASH, 80 CM_ASL_ACPIFLASH, 81 CM_ASL_CPUFV, 82 CM_ASL_CPUTEMPERATURE, 83 CM_ASL_FANCPU, 84 CM_ASL_FANCHASSIS, 85 CM_ASL_USBPORT1, 86 CM_ASL_USBPORT2, 87 CM_ASL_USBPORT3, 88 CM_ASL_MODEM, 89 CM_ASL_CARDREADER, 90 CM_ASL_LID 91 }; 92 93 static const char *cm_getv[] = { 94 "WLDG", "BTHG", NULL, NULL, 95 "CAMG", NULL, NULL, NULL, 96 NULL, "PBLG", NULL, NULL, 97 "CFVG", NULL, NULL, NULL, 98 "USBG", NULL, NULL, "MODG", 99 "CRDG", "LIDG" 100 }; 101 102 static const char *cm_setv[] = { 103 "WLDS", "BTHS", NULL, NULL, 104 "CAMS", NULL, NULL, NULL, 105 "SDSP", "PBLS", "HDPS", NULL, 106 "CFVS", NULL, NULL, NULL, 107 "USBG", NULL, NULL, "MODS", 108 "CRDS", NULL 109 }; 110 111 #define EEEPC_EC "\\_SB.PCI0.SBRG.EC0." 112 113 #define EEEPC_EC_FAN_PWM EEEPC_EC "SC02" /* Fan PWM duty cycle (%) */ 114 #define EEEPC_EC_SC02 0x63 115 #define EEEPC_EC_FAN_HRPM EEEPC_EC "SC05" /* High byte, fan speed (RPM) */ 116 #define EEEPC_EC_FAN_LRPM EEEPC_EC "SC06" /* Low byte, fan speed (RPM) */ 117 #define EEEPC_EC_FAN_CTRL EEEPC_EC "SFB3" /* Byte containing SF25 */ 118 #define EEEPC_EC_SFB3 0xD3 119 120 /* 121 * This is the main structure, we can use it to store useful information 122 * about the hotk device 123 */ 124 struct eeepc_hotk { 125 struct acpi_device *device; /* the device we are in */ 126 acpi_handle handle; /* the handle of the hotk device */ 127 u32 cm_supported; /* the control methods supported 128 by this BIOS */ 129 uint init_flag; /* Init flags */ 130 u16 event_count[128]; /* count for each event */ 131 struct input_dev *inputdev; 132 u16 *keycode_map; 133 struct rfkill *eeepc_wlan_rfkill; 134 struct rfkill *eeepc_bluetooth_rfkill; 135 }; 136 137 /* The actual device the driver binds to */ 138 static struct eeepc_hotk *ehotk; 139 140 /* Platform device/driver */ 141 static struct platform_driver platform_driver = { 142 .driver = { 143 .name = EEEPC_HOTK_FILE, 144 .owner = THIS_MODULE, 145 } 146 }; 147 148 static struct platform_device *platform_device; 149 150 struct key_entry { 151 char type; 152 u8 code; 153 u16 keycode; 154 }; 155 156 enum { KE_KEY, KE_END }; 157 158 static struct key_entry eeepc_keymap[] = { 159 /* Sleep already handled via generic ACPI code */ 160 {KE_KEY, 0x10, KEY_WLAN }, 161 {KE_KEY, 0x11, KEY_WLAN }, 162 {KE_KEY, 0x12, KEY_PROG1 }, 163 {KE_KEY, 0x13, KEY_MUTE }, 164 {KE_KEY, 0x14, KEY_VOLUMEDOWN }, 165 {KE_KEY, 0x15, KEY_VOLUMEUP }, 166 {KE_KEY, 0x1a, KEY_COFFEE }, 167 {KE_KEY, 0x1b, KEY_ZOOM }, 168 {KE_KEY, 0x1c, KEY_PROG2 }, 169 {KE_KEY, 0x1d, KEY_PROG3 }, 170 {KE_KEY, NOTIFY_BRN_MIN, KEY_BRIGHTNESSDOWN }, 171 {KE_KEY, NOTIFY_BRN_MIN + 2, KEY_BRIGHTNESSUP }, 172 {KE_KEY, 0x30, KEY_SWITCHVIDEOMODE }, 173 {KE_KEY, 0x31, KEY_SWITCHVIDEOMODE }, 174 {KE_KEY, 0x32, KEY_SWITCHVIDEOMODE }, 175 {KE_END, 0}, 176 }; 177 178 /* 179 * The hotkey driver declaration 180 */ 181 static int eeepc_hotk_add(struct acpi_device *device); 182 static int eeepc_hotk_remove(struct acpi_device *device, int type); 183 184 static const struct acpi_device_id eeepc_device_ids[] = { 185 {EEEPC_HOTK_HID, 0}, 186 {"", 0}, 187 }; 188 MODULE_DEVICE_TABLE(acpi, eeepc_device_ids); 189 190 static struct acpi_driver eeepc_hotk_driver = { 191 .name = EEEPC_HOTK_NAME, 192 .class = EEEPC_HOTK_CLASS, 193 .ids = eeepc_device_ids, 194 .ops = { 195 .add = eeepc_hotk_add, 196 .remove = eeepc_hotk_remove, 197 }, 198 }; 199 200 /* The backlight device /sys/class/backlight */ 201 static struct backlight_device *eeepc_backlight_device; 202 203 /* The hwmon device */ 204 static struct device *eeepc_hwmon_device; 205 206 /* 207 * The backlight class declaration 208 */ 209 static int read_brightness(struct backlight_device *bd); 210 static int update_bl_status(struct backlight_device *bd); 211 static struct backlight_ops eeepcbl_ops = { 212 .get_brightness = read_brightness, 213 .update_status = update_bl_status, 214 }; 215 216 MODULE_AUTHOR("Corentin Chary, Eric Cooper"); 217 MODULE_DESCRIPTION(EEEPC_HOTK_NAME); 218 MODULE_LICENSE("GPL"); 219 220 /* 221 * ACPI Helpers 222 */ 223 static int write_acpi_int(acpi_handle handle, const char *method, int val, 224 struct acpi_buffer *output) 225 { 226 struct acpi_object_list params; 227 union acpi_object in_obj; 228 acpi_status status; 229 230 params.count = 1; 231 params.pointer = &in_obj; 232 in_obj.type = ACPI_TYPE_INTEGER; 233 in_obj.integer.value = val; 234 235 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); 236 return (status == AE_OK ? 0 : -1); 237 } 238 239 static int read_acpi_int(acpi_handle handle, const char *method, int *val) 240 { 241 acpi_status status; 242 unsigned long long result; 243 244 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result); 245 if (ACPI_FAILURE(status)) { 246 *val = -1; 247 return -1; 248 } else { 249 *val = result; 250 return 0; 251 } 252 } 253 254 static int set_acpi(int cm, int value) 255 { 256 if (ehotk->cm_supported & (0x1 << cm)) { 257 const char *method = cm_setv[cm]; 258 if (method == NULL) 259 return -ENODEV; 260 if (write_acpi_int(ehotk->handle, method, value, NULL)) 261 printk(EEEPC_WARNING "Error writing %s\n", method); 262 } 263 return 0; 264 } 265 266 static int get_acpi(int cm) 267 { 268 int value = -1; 269 if ((ehotk->cm_supported & (0x1 << cm))) { 270 const char *method = cm_getv[cm]; 271 if (method == NULL) 272 return -ENODEV; 273 if (read_acpi_int(ehotk->handle, method, &value)) 274 printk(EEEPC_WARNING "Error reading %s\n", method); 275 } 276 return value; 277 } 278 279 /* 280 * Backlight 281 */ 282 static int read_brightness(struct backlight_device *bd) 283 { 284 return get_acpi(CM_ASL_PANELBRIGHT); 285 } 286 287 static int set_brightness(struct backlight_device *bd, int value) 288 { 289 value = max(0, min(15, value)); 290 return set_acpi(CM_ASL_PANELBRIGHT, value); 291 } 292 293 static int update_bl_status(struct backlight_device *bd) 294 { 295 return set_brightness(bd, bd->props.brightness); 296 } 297 298 /* 299 * Rfkill helpers 300 */ 301 302 static int eeepc_wlan_rfkill_set(void *data, enum rfkill_state state) 303 { 304 if (state == RFKILL_STATE_SOFT_BLOCKED) 305 return set_acpi(CM_ASL_WLAN, 0); 306 else 307 return set_acpi(CM_ASL_WLAN, 1); 308 } 309 310 static int eeepc_wlan_rfkill_state(void *data, enum rfkill_state *state) 311 { 312 if (get_acpi(CM_ASL_WLAN) == 1) 313 *state = RFKILL_STATE_UNBLOCKED; 314 else 315 *state = RFKILL_STATE_SOFT_BLOCKED; 316 return 0; 317 } 318 319 static int eeepc_bluetooth_rfkill_set(void *data, enum rfkill_state state) 320 { 321 if (state == RFKILL_STATE_SOFT_BLOCKED) 322 return set_acpi(CM_ASL_BLUETOOTH, 0); 323 else 324 return set_acpi(CM_ASL_BLUETOOTH, 1); 325 } 326 327 static int eeepc_bluetooth_rfkill_state(void *data, enum rfkill_state *state) 328 { 329 if (get_acpi(CM_ASL_BLUETOOTH) == 1) 330 *state = RFKILL_STATE_UNBLOCKED; 331 else 332 *state = RFKILL_STATE_SOFT_BLOCKED; 333 return 0; 334 } 335 336 /* 337 * Sys helpers 338 */ 339 static int parse_arg(const char *buf, unsigned long count, int *val) 340 { 341 if (!count) 342 return 0; 343 if (sscanf(buf, "%i", val) != 1) 344 return -EINVAL; 345 return count; 346 } 347 348 static ssize_t store_sys_acpi(int cm, const char *buf, size_t count) 349 { 350 int rv, value; 351 352 rv = parse_arg(buf, count, &value); 353 if (rv > 0) 354 set_acpi(cm, value); 355 return rv; 356 } 357 358 static ssize_t show_sys_acpi(int cm, char *buf) 359 { 360 return sprintf(buf, "%d\n", get_acpi(cm)); 361 } 362 363 #define EEEPC_CREATE_DEVICE_ATTR(_name, _cm) \ 364 static ssize_t show_##_name(struct device *dev, \ 365 struct device_attribute *attr, \ 366 char *buf) \ 367 { \ 368 return show_sys_acpi(_cm, buf); \ 369 } \ 370 static ssize_t store_##_name(struct device *dev, \ 371 struct device_attribute *attr, \ 372 const char *buf, size_t count) \ 373 { \ 374 return store_sys_acpi(_cm, buf, count); \ 375 } \ 376 static struct device_attribute dev_attr_##_name = { \ 377 .attr = { \ 378 .name = __stringify(_name), \ 379 .mode = 0644 }, \ 380 .show = show_##_name, \ 381 .store = store_##_name, \ 382 } 383 384 EEEPC_CREATE_DEVICE_ATTR(camera, CM_ASL_CAMERA); 385 EEEPC_CREATE_DEVICE_ATTR(cardr, CM_ASL_CARDREADER); 386 EEEPC_CREATE_DEVICE_ATTR(disp, CM_ASL_DISPLAYSWITCH); 387 EEEPC_CREATE_DEVICE_ATTR(cpufv, CM_ASL_CPUFV); 388 389 static struct attribute *platform_attributes[] = { 390 &dev_attr_camera.attr, 391 &dev_attr_cardr.attr, 392 &dev_attr_disp.attr, 393 &dev_attr_cpufv.attr, 394 NULL 395 }; 396 397 static struct attribute_group platform_attribute_group = { 398 .attrs = platform_attributes 399 }; 400 401 /* 402 * Hotkey functions 403 */ 404 static struct key_entry *eepc_get_entry_by_scancode(int code) 405 { 406 struct key_entry *key; 407 408 for (key = eeepc_keymap; key->type != KE_END; key++) 409 if (code == key->code) 410 return key; 411 412 return NULL; 413 } 414 415 static struct key_entry *eepc_get_entry_by_keycode(int code) 416 { 417 struct key_entry *key; 418 419 for (key = eeepc_keymap; key->type != KE_END; key++) 420 if (code == key->keycode && key->type == KE_KEY) 421 return key; 422 423 return NULL; 424 } 425 426 static int eeepc_getkeycode(struct input_dev *dev, int scancode, int *keycode) 427 { 428 struct key_entry *key = eepc_get_entry_by_scancode(scancode); 429 430 if (key && key->type == KE_KEY) { 431 *keycode = key->keycode; 432 return 0; 433 } 434 435 return -EINVAL; 436 } 437 438 static int eeepc_setkeycode(struct input_dev *dev, int scancode, int keycode) 439 { 440 struct key_entry *key; 441 int old_keycode; 442 443 if (keycode < 0 || keycode > KEY_MAX) 444 return -EINVAL; 445 446 key = eepc_get_entry_by_scancode(scancode); 447 if (key && key->type == KE_KEY) { 448 old_keycode = key->keycode; 449 key->keycode = keycode; 450 set_bit(keycode, dev->keybit); 451 if (!eepc_get_entry_by_keycode(old_keycode)) 452 clear_bit(old_keycode, dev->keybit); 453 return 0; 454 } 455 456 return -EINVAL; 457 } 458 459 static int eeepc_hotk_check(void) 460 { 461 const struct key_entry *key; 462 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 463 int result; 464 465 result = acpi_bus_get_status(ehotk->device); 466 if (result) 467 return result; 468 if (ehotk->device->status.present) { 469 if (write_acpi_int(ehotk->handle, "INIT", ehotk->init_flag, 470 &buffer)) { 471 printk(EEEPC_ERR "Hotkey initialization failed\n"); 472 return -ENODEV; 473 } else { 474 printk(EEEPC_NOTICE "Hotkey init flags 0x%x\n", 475 ehotk->init_flag); 476 } 477 /* get control methods supported */ 478 if (read_acpi_int(ehotk->handle, "CMSG" 479 , &ehotk->cm_supported)) { 480 printk(EEEPC_ERR 481 "Get control methods supported failed\n"); 482 return -ENODEV; 483 } else { 484 printk(EEEPC_INFO 485 "Get control methods supported: 0x%x\n", 486 ehotk->cm_supported); 487 } 488 ehotk->inputdev = input_allocate_device(); 489 if (!ehotk->inputdev) { 490 printk(EEEPC_INFO "Unable to allocate input device\n"); 491 return 0; 492 } 493 ehotk->inputdev->name = "Asus EeePC extra buttons"; 494 ehotk->inputdev->phys = EEEPC_HOTK_FILE "/input0"; 495 ehotk->inputdev->id.bustype = BUS_HOST; 496 ehotk->inputdev->getkeycode = eeepc_getkeycode; 497 ehotk->inputdev->setkeycode = eeepc_setkeycode; 498 499 for (key = eeepc_keymap; key->type != KE_END; key++) { 500 switch (key->type) { 501 case KE_KEY: 502 set_bit(EV_KEY, ehotk->inputdev->evbit); 503 set_bit(key->keycode, ehotk->inputdev->keybit); 504 break; 505 } 506 } 507 result = input_register_device(ehotk->inputdev); 508 if (result) { 509 printk(EEEPC_INFO "Unable to register input device\n"); 510 input_free_device(ehotk->inputdev); 511 return 0; 512 } 513 } else { 514 printk(EEEPC_ERR "Hotkey device not present, aborting\n"); 515 return -EINVAL; 516 } 517 return 0; 518 } 519 520 static int notify_brn(void) 521 { 522 /* returns the *previous* brightness, or -1 */ 523 struct backlight_device *bd = eeepc_backlight_device; 524 if (bd) { 525 int old = bd->props.brightness; 526 bd->props.brightness = read_brightness(bd); 527 return old; 528 } 529 return -1; 530 } 531 532 static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data) 533 { 534 enum rfkill_state state; 535 struct pci_dev *dev; 536 struct pci_bus *bus = pci_find_bus(0, 1); 537 538 if (event != ACPI_NOTIFY_BUS_CHECK) 539 return; 540 541 if (!bus) { 542 printk(EEEPC_WARNING "Unable to find PCI bus 1?\n"); 543 return; 544 } 545 546 eeepc_wlan_rfkill_state(ehotk->eeepc_wlan_rfkill, &state); 547 548 if (state == RFKILL_STATE_UNBLOCKED) { 549 dev = pci_get_slot(bus, 0); 550 if (dev) { 551 /* Device already present */ 552 pci_dev_put(dev); 553 return; 554 } 555 dev = pci_scan_single_device(bus, 0); 556 if (dev) { 557 pci_bus_assign_resources(bus); 558 if (pci_bus_add_device(dev)) 559 printk(EEEPC_ERR "Unable to hotplug wifi\n"); 560 } 561 } else { 562 dev = pci_get_slot(bus, 0); 563 if (dev) { 564 pci_remove_bus_device(dev); 565 pci_dev_put(dev); 566 } 567 } 568 569 rfkill_force_state(ehotk->eeepc_wlan_rfkill, state); 570 } 571 572 static void eeepc_hotk_notify(acpi_handle handle, u32 event, void *data) 573 { 574 static struct key_entry *key; 575 u16 count; 576 int brn = -ENODEV; 577 578 if (!ehotk) 579 return; 580 if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX) 581 brn = notify_brn(); 582 count = ehotk->event_count[event % 128]++; 583 acpi_bus_generate_proc_event(ehotk->device, event, count); 584 acpi_bus_generate_netlink_event(ehotk->device->pnp.device_class, 585 dev_name(&ehotk->device->dev), event, 586 count); 587 if (ehotk->inputdev) { 588 if (brn != -ENODEV) { 589 /* brightness-change events need special 590 * handling for conversion to key events 591 */ 592 if (brn < 0) 593 brn = event; 594 else 595 brn += NOTIFY_BRN_MIN; 596 if (event < brn) 597 event = NOTIFY_BRN_MIN; /* brightness down */ 598 else if (event > brn) 599 event = NOTIFY_BRN_MIN + 2; /* ... up */ 600 else 601 event = NOTIFY_BRN_MIN + 1; /* ... unchanged */ 602 } 603 key = eepc_get_entry_by_scancode(event); 604 if (key) { 605 switch (key->type) { 606 case KE_KEY: 607 input_report_key(ehotk->inputdev, key->keycode, 608 1); 609 input_sync(ehotk->inputdev); 610 input_report_key(ehotk->inputdev, key->keycode, 611 0); 612 input_sync(ehotk->inputdev); 613 break; 614 } 615 } 616 } 617 } 618 619 static int eeepc_register_rfkill_notifier(char *node) 620 { 621 acpi_status status = AE_OK; 622 acpi_handle handle; 623 624 status = acpi_get_handle(NULL, node, &handle); 625 626 if (ACPI_SUCCESS(status)) { 627 status = acpi_install_notify_handler(handle, 628 ACPI_SYSTEM_NOTIFY, 629 eeepc_rfkill_notify, 630 NULL); 631 if (ACPI_FAILURE(status)) 632 printk(EEEPC_WARNING 633 "Failed to register notify on %s\n", node); 634 } else 635 return -ENODEV; 636 637 return 0; 638 } 639 640 static void eeepc_unregister_rfkill_notifier(char *node) 641 { 642 acpi_status status = AE_OK; 643 acpi_handle handle; 644 645 status = acpi_get_handle(NULL, node, &handle); 646 647 if (ACPI_SUCCESS(status)) { 648 status = acpi_remove_notify_handler(handle, 649 ACPI_SYSTEM_NOTIFY, 650 eeepc_rfkill_notify); 651 if (ACPI_FAILURE(status)) 652 printk(EEEPC_ERR 653 "Error removing rfkill notify handler %s\n", 654 node); 655 } 656 } 657 658 static int eeepc_hotk_add(struct acpi_device *device) 659 { 660 acpi_status status = AE_OK; 661 int result; 662 663 if (!device) 664 return -EINVAL; 665 printk(EEEPC_NOTICE EEEPC_HOTK_NAME "\n"); 666 ehotk = kzalloc(sizeof(struct eeepc_hotk), GFP_KERNEL); 667 if (!ehotk) 668 return -ENOMEM; 669 ehotk->init_flag = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH; 670 ehotk->handle = device->handle; 671 strcpy(acpi_device_name(device), EEEPC_HOTK_DEVICE_NAME); 672 strcpy(acpi_device_class(device), EEEPC_HOTK_CLASS); 673 device->driver_data = ehotk; 674 ehotk->device = device; 675 result = eeepc_hotk_check(); 676 if (result) 677 goto ehotk_fail; 678 status = acpi_install_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY, 679 eeepc_hotk_notify, ehotk); 680 if (ACPI_FAILURE(status)) 681 printk(EEEPC_ERR "Error installing notify handler\n"); 682 683 eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P6"); 684 eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P7"); 685 686 if (get_acpi(CM_ASL_WLAN) != -1) { 687 ehotk->eeepc_wlan_rfkill = rfkill_allocate(&device->dev, 688 RFKILL_TYPE_WLAN); 689 690 if (!ehotk->eeepc_wlan_rfkill) 691 goto wlan_fail; 692 693 ehotk->eeepc_wlan_rfkill->name = "eeepc-wlan"; 694 ehotk->eeepc_wlan_rfkill->toggle_radio = eeepc_wlan_rfkill_set; 695 ehotk->eeepc_wlan_rfkill->get_state = eeepc_wlan_rfkill_state; 696 if (get_acpi(CM_ASL_WLAN) == 1) { 697 ehotk->eeepc_wlan_rfkill->state = 698 RFKILL_STATE_UNBLOCKED; 699 rfkill_set_default(RFKILL_TYPE_WLAN, 700 RFKILL_STATE_UNBLOCKED); 701 } else { 702 ehotk->eeepc_wlan_rfkill->state = 703 RFKILL_STATE_SOFT_BLOCKED; 704 rfkill_set_default(RFKILL_TYPE_WLAN, 705 RFKILL_STATE_SOFT_BLOCKED); 706 } 707 result = rfkill_register(ehotk->eeepc_wlan_rfkill); 708 if (result) 709 goto wlan_fail; 710 } 711 712 if (get_acpi(CM_ASL_BLUETOOTH) != -1) { 713 ehotk->eeepc_bluetooth_rfkill = 714 rfkill_allocate(&device->dev, RFKILL_TYPE_BLUETOOTH); 715 716 if (!ehotk->eeepc_bluetooth_rfkill) 717 goto bluetooth_fail; 718 719 ehotk->eeepc_bluetooth_rfkill->name = "eeepc-bluetooth"; 720 ehotk->eeepc_bluetooth_rfkill->toggle_radio = 721 eeepc_bluetooth_rfkill_set; 722 ehotk->eeepc_bluetooth_rfkill->get_state = 723 eeepc_bluetooth_rfkill_state; 724 if (get_acpi(CM_ASL_BLUETOOTH) == 1) { 725 ehotk->eeepc_bluetooth_rfkill->state = 726 RFKILL_STATE_UNBLOCKED; 727 rfkill_set_default(RFKILL_TYPE_BLUETOOTH, 728 RFKILL_STATE_UNBLOCKED); 729 } else { 730 ehotk->eeepc_bluetooth_rfkill->state = 731 RFKILL_STATE_SOFT_BLOCKED; 732 rfkill_set_default(RFKILL_TYPE_BLUETOOTH, 733 RFKILL_STATE_SOFT_BLOCKED); 734 } 735 736 result = rfkill_register(ehotk->eeepc_bluetooth_rfkill); 737 if (result) 738 goto bluetooth_fail; 739 } 740 741 return 0; 742 743 bluetooth_fail: 744 if (ehotk->eeepc_bluetooth_rfkill) 745 rfkill_free(ehotk->eeepc_bluetooth_rfkill); 746 rfkill_unregister(ehotk->eeepc_wlan_rfkill); 747 ehotk->eeepc_wlan_rfkill = NULL; 748 wlan_fail: 749 if (ehotk->eeepc_wlan_rfkill) 750 rfkill_free(ehotk->eeepc_wlan_rfkill); 751 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P6"); 752 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P7"); 753 ehotk_fail: 754 kfree(ehotk); 755 ehotk = NULL; 756 757 return result; 758 } 759 760 static int eeepc_hotk_remove(struct acpi_device *device, int type) 761 { 762 acpi_status status = 0; 763 764 if (!device || !acpi_driver_data(device)) 765 return -EINVAL; 766 status = acpi_remove_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY, 767 eeepc_hotk_notify); 768 if (ACPI_FAILURE(status)) 769 printk(EEEPC_ERR "Error removing notify handler\n"); 770 771 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P6"); 772 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P7"); 773 774 kfree(ehotk); 775 return 0; 776 } 777 778 /* 779 * Hwmon 780 */ 781 static int eeepc_get_fan_pwm(void) 782 { 783 int value = 0; 784 785 read_acpi_int(NULL, EEEPC_EC_FAN_PWM, &value); 786 value = value * 255 / 100; 787 return (value); 788 } 789 790 static void eeepc_set_fan_pwm(int value) 791 { 792 value = SENSORS_LIMIT(value, 0, 255); 793 value = value * 100 / 255; 794 ec_write(EEEPC_EC_SC02, value); 795 } 796 797 static int eeepc_get_fan_rpm(void) 798 { 799 int high = 0; 800 int low = 0; 801 802 read_acpi_int(NULL, EEEPC_EC_FAN_HRPM, &high); 803 read_acpi_int(NULL, EEEPC_EC_FAN_LRPM, &low); 804 return (high << 8 | low); 805 } 806 807 static int eeepc_get_fan_ctrl(void) 808 { 809 int value = 0; 810 811 read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value); 812 return ((value & 0x02 ? 1 : 0)); 813 } 814 815 static void eeepc_set_fan_ctrl(int manual) 816 { 817 int value = 0; 818 819 read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value); 820 if (manual) 821 value |= 0x02; 822 else 823 value &= ~0x02; 824 ec_write(EEEPC_EC_SFB3, value); 825 } 826 827 static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count) 828 { 829 int rv, value; 830 831 rv = parse_arg(buf, count, &value); 832 if (rv > 0) 833 set(value); 834 return rv; 835 } 836 837 static ssize_t show_sys_hwmon(int (*get)(void), char *buf) 838 { 839 return sprintf(buf, "%d\n", get()); 840 } 841 842 #define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \ 843 static ssize_t show_##_name(struct device *dev, \ 844 struct device_attribute *attr, \ 845 char *buf) \ 846 { \ 847 return show_sys_hwmon(_set, buf); \ 848 } \ 849 static ssize_t store_##_name(struct device *dev, \ 850 struct device_attribute *attr, \ 851 const char *buf, size_t count) \ 852 { \ 853 return store_sys_hwmon(_get, buf, count); \ 854 } \ 855 static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0); 856 857 EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL); 858 EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR, 859 eeepc_get_fan_pwm, eeepc_set_fan_pwm); 860 EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, 861 eeepc_get_fan_ctrl, eeepc_set_fan_ctrl); 862 863 static ssize_t 864 show_name(struct device *dev, struct device_attribute *attr, char *buf) 865 { 866 return sprintf(buf, "eeepc\n"); 867 } 868 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0); 869 870 static struct attribute *hwmon_attributes[] = { 871 &sensor_dev_attr_pwm1.dev_attr.attr, 872 &sensor_dev_attr_fan1_input.dev_attr.attr, 873 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 874 &sensor_dev_attr_name.dev_attr.attr, 875 NULL 876 }; 877 878 static struct attribute_group hwmon_attribute_group = { 879 .attrs = hwmon_attributes 880 }; 881 882 /* 883 * exit/init 884 */ 885 static void eeepc_backlight_exit(void) 886 { 887 if (eeepc_backlight_device) 888 backlight_device_unregister(eeepc_backlight_device); 889 eeepc_backlight_device = NULL; 890 } 891 892 static void eeepc_rfkill_exit(void) 893 { 894 if (ehotk->eeepc_wlan_rfkill) 895 rfkill_unregister(ehotk->eeepc_wlan_rfkill); 896 if (ehotk->eeepc_bluetooth_rfkill) 897 rfkill_unregister(ehotk->eeepc_bluetooth_rfkill); 898 } 899 900 static void eeepc_input_exit(void) 901 { 902 if (ehotk->inputdev) 903 input_unregister_device(ehotk->inputdev); 904 } 905 906 static void eeepc_hwmon_exit(void) 907 { 908 struct device *hwmon; 909 910 hwmon = eeepc_hwmon_device; 911 if (!hwmon) 912 return ; 913 sysfs_remove_group(&hwmon->kobj, 914 &hwmon_attribute_group); 915 hwmon_device_unregister(hwmon); 916 eeepc_hwmon_device = NULL; 917 } 918 919 static void __exit eeepc_laptop_exit(void) 920 { 921 eeepc_backlight_exit(); 922 eeepc_rfkill_exit(); 923 eeepc_input_exit(); 924 eeepc_hwmon_exit(); 925 acpi_bus_unregister_driver(&eeepc_hotk_driver); 926 sysfs_remove_group(&platform_device->dev.kobj, 927 &platform_attribute_group); 928 platform_device_unregister(platform_device); 929 platform_driver_unregister(&platform_driver); 930 } 931 932 static int eeepc_backlight_init(struct device *dev) 933 { 934 struct backlight_device *bd; 935 936 bd = backlight_device_register(EEEPC_HOTK_FILE, dev, 937 NULL, &eeepcbl_ops); 938 if (IS_ERR(bd)) { 939 printk(EEEPC_ERR 940 "Could not register eeepc backlight device\n"); 941 eeepc_backlight_device = NULL; 942 return PTR_ERR(bd); 943 } 944 eeepc_backlight_device = bd; 945 bd->props.max_brightness = 15; 946 bd->props.brightness = read_brightness(NULL); 947 bd->props.power = FB_BLANK_UNBLANK; 948 backlight_update_status(bd); 949 return 0; 950 } 951 952 static int eeepc_hwmon_init(struct device *dev) 953 { 954 struct device *hwmon; 955 int result; 956 957 hwmon = hwmon_device_register(dev); 958 if (IS_ERR(hwmon)) { 959 printk(EEEPC_ERR 960 "Could not register eeepc hwmon device\n"); 961 eeepc_hwmon_device = NULL; 962 return PTR_ERR(hwmon); 963 } 964 eeepc_hwmon_device = hwmon; 965 result = sysfs_create_group(&hwmon->kobj, 966 &hwmon_attribute_group); 967 if (result) 968 eeepc_hwmon_exit(); 969 return result; 970 } 971 972 static int __init eeepc_laptop_init(void) 973 { 974 struct device *dev; 975 int result; 976 977 if (acpi_disabled) 978 return -ENODEV; 979 result = acpi_bus_register_driver(&eeepc_hotk_driver); 980 if (result < 0) 981 return result; 982 if (!ehotk) { 983 acpi_bus_unregister_driver(&eeepc_hotk_driver); 984 return -ENODEV; 985 } 986 dev = acpi_get_physical_device(ehotk->device->handle); 987 988 if (!acpi_video_backlight_support()) { 989 result = eeepc_backlight_init(dev); 990 if (result) 991 goto fail_backlight; 992 } else 993 printk(EEEPC_INFO "Backlight controlled by ACPI video " 994 "driver\n"); 995 996 result = eeepc_hwmon_init(dev); 997 if (result) 998 goto fail_hwmon; 999 /* Register platform stuff */ 1000 result = platform_driver_register(&platform_driver); 1001 if (result) 1002 goto fail_platform_driver; 1003 platform_device = platform_device_alloc(EEEPC_HOTK_FILE, -1); 1004 if (!platform_device) { 1005 result = -ENOMEM; 1006 goto fail_platform_device1; 1007 } 1008 result = platform_device_add(platform_device); 1009 if (result) 1010 goto fail_platform_device2; 1011 result = sysfs_create_group(&platform_device->dev.kobj, 1012 &platform_attribute_group); 1013 if (result) 1014 goto fail_sysfs; 1015 return 0; 1016 fail_sysfs: 1017 platform_device_del(platform_device); 1018 fail_platform_device2: 1019 platform_device_put(platform_device); 1020 fail_platform_device1: 1021 platform_driver_unregister(&platform_driver); 1022 fail_platform_driver: 1023 eeepc_hwmon_exit(); 1024 fail_hwmon: 1025 eeepc_backlight_exit(); 1026 fail_backlight: 1027 eeepc_input_exit(); 1028 eeepc_rfkill_exit(); 1029 return result; 1030 } 1031 1032 module_init(eeepc_laptop_init); 1033 module_exit(eeepc_laptop_exit); 1034