drivers/platform/x86/fujitsu-laptop.c

   1 /*-*-linux-c-*-*/
   2
   3 /*
   4   Copyright (C) 2007,2008 Jonathan Woithe <jwoithe@just42.net>
   5   Copyright (C) 2008 Peter Gruber <nokos@gmx.net>
   6   Copyright (C) 2008 Tony Vroon <tony@linx.net>
   7   Based on earlier work:
   8     Copyright (C) 2003 Shane Spencer <shane@bogomip.com>
   9     Adrian Yee <brewt-fujitsu@brewt.org>
  10
  11   Templated from msi-laptop.c and thinkpad_acpi.c which is copyright
  12   by its respective authors.
  13
  14   This program is free software; you can redistribute it and/or modify
  15   it under the terms of the GNU General Public License as published by
  16   the Free Software Foundation; either version 2 of the License, or
  17   (at your option) any later version.
  18
  19   This program is distributed in the hope that it will be useful, but
  20   WITHOUT ANY WARRANTY; without even the implied warranty of
  21   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  22   General Public License for more details.
  23
  24   You should have received a copy of the GNU General Public License
  25   along with this program; if not, write to the Free Software
  26   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  27   02110-1301, USA.
  28  */
  29
  30 /*
  31  * fujitsu-laptop.c - Fujitsu laptop support, providing access to additional
  32  * features made available on a range of Fujitsu laptops including the
  33  * P2xxx/P5xxx/S6xxx/S7xxx series.
  34  *
  35  * This driver exports a few files in /sys/devices/platform/fujitsu-laptop/;
  36  * others may be added at a later date.
  37  *
  38  *   lcd_level - Screen brightness: contains a single integer in the
  39  *   range 0..7. (rw)
  40  *
  41  * In addition to these platform device attributes the driver
  42  * registers itself in the Linux backlight control subsystem and is
  43  * available to userspace under /sys/class/backlight/fujitsu-laptop/.
  44  *
  45  * Hotkeys present on certain Fujitsu laptops (eg: the S6xxx series) are
  46  * also supported by this driver.
  47  *
  48  * This driver has been tested on a Fujitsu Lifebook S6410, S7020 and
  49  * P8010.  It should work on most P-series and S-series Lifebooks, but
  50  * YMMV.
  51  *
  52  * The module parameter use_alt_lcd_levels switches between different ACPI
  53  * brightness controls which are used by different Fujitsu laptops.  In most
  54  * cases the correct method is automatically detected. "use_alt_lcd_levels=1"
  55  * is applicable for a Fujitsu Lifebook S6410 if autodetection fails.
  56  *
  57  */
  58
  59 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  60
  61 #include <linux/module.h>
  62 #include <linux/kernel.h>
  63 #include <linux/init.h>
  64 #include <linux/acpi.h>
  65 #include <linux/dmi.h>
  66 #include <linux/backlight.h>
  67 #include <linux/fb.h>
  68 #include <linux/input.h>
  69 #include <linux/kfifo.h>
  70 #include <linux/platform_device.h>
  71 #include <linux/slab.h>
  72 #if IS_ENABLED(CONFIG_LEDS_CLASS)
  73 #include <linux/leds.h>
  74 #endif
  75 #include <acpi/video.h>
  76
  77 #define FUJITSU_DRIVER_VERSION "0.6.0"
  78
  79 #define FUJITSU_LCD_N_LEVELS 8
  80
  81 #define ACPI_FUJITSU_CLASS              "fujitsu"
  82 #define ACPI_FUJITSU_HID                "FUJ02B1"
  83 #define ACPI_FUJITSU_DRIVER_NAME        "Fujitsu laptop FUJ02B1 ACPI brightness driver"
  84 #define ACPI_FUJITSU_DEVICE_NAME        "Fujitsu FUJ02B1"
  85 #define ACPI_FUJITSU_HOTKEY_HID         "FUJ02E3"
  86 #define ACPI_FUJITSU_HOTKEY_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
  87 #define ACPI_FUJITSU_HOTKEY_DEVICE_NAME "Fujitsu FUJ02E3"
  88
  89 #define ACPI_FUJITSU_NOTIFY_CODE1     0x80
  90
  91 /* FUNC interface - command values */
  92 #define FUNC_RFKILL     0x1000
  93 #define FUNC_LEDS       0x1001
  94 #define FUNC_BUTTONS    0x1002
  95 #define FUNC_BACKLIGHT  0x1004
  96
  97 /* FUNC interface - responses */
  98 #define UNSUPPORTED_CMD 0x80000000
  99
 100 #if IS_ENABLED(CONFIG_LEDS_CLASS)
 101 /* FUNC interface - LED control */
 102 #define FUNC_LED_OFF    0x1
 103 #define FUNC_LED_ON     0x30001
 104 #define KEYBOARD_LAMPS  0x100
 105 #define LOGOLAMP_POWERON 0x2000
 106 #define LOGOLAMP_ALWAYS  0x4000
 107 #define RADIO_LED_ON    0x20
 108 #define ECO_LED 0x10000
 109 #define ECO_LED_ON      0x80000
 110 #endif
 111
 112 /* Hotkey details */
 113 #define KEY1_CODE       0x410   /* codes for the keys in the GIRB register */
 114 #define KEY2_CODE       0x411
 115 #define KEY3_CODE       0x412
 116 #define KEY4_CODE       0x413
 117 #define KEY5_CODE       0x420
 118
 119 #define MAX_HOTKEY_RINGBUFFER_SIZE 100
 120 #define RINGBUFFERSIZE 40
 121
 122 /* Debugging */
 123 #define FUJLAPTOP_DBG_ERROR       0x0001
 124 #define FUJLAPTOP_DBG_WARN        0x0002
 125 #define FUJLAPTOP_DBG_INFO        0x0004
 126 #define FUJLAPTOP_DBG_TRACE       0x0008
 127
 128 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
 129 #define vdbg_printk(a_dbg_level, format, arg...) \
 130         do { if (dbg_level & a_dbg_level) \
 131                 printk(KERN_DEBUG pr_fmt("%s: " format), __func__, ## arg); \
 132         } while (0)
 133 #else
 134 #define vdbg_printk(a_dbg_level, format, arg...) \
 135         do { } while (0)
 136 #endif
 137
 138 /* Device controlling the backlight and associated keys */
 139 struct fujitsu_t {
 140         acpi_handle acpi_handle;
 141         struct acpi_device *dev;
 142         struct input_dev *input;
 143         char phys[32];
 144         struct backlight_device *bl_device;
 145         struct platform_device *pf_device;
 146         int keycode1, keycode2, keycode3, keycode4, keycode5;
 147
 148         unsigned int max_brightness;
 149         unsigned int brightness_changed;
 150         unsigned int brightness_level;
 151 };
 152
 153 static struct fujitsu_t *fujitsu;
 154 static int use_alt_lcd_levels = -1;
 155 static int disable_brightness_adjust = -1;
 156
 157 /* Device used to access other hotkeys on the laptop */
 158 struct fujitsu_hotkey_t {
 159         acpi_handle acpi_handle;
 160         struct acpi_device *dev;
 161         struct input_dev *input;
 162         char phys[32];
 163         struct platform_device *pf_device;
 164         struct kfifo fifo;
 165         spinlock_t fifo_lock;
 166         int rfkill_supported;
 167         int rfkill_state;
 168         int logolamp_registered;
 169         int kblamps_registered;
 170         int radio_led_registered;
 171         int eco_led_registered;
 172 };
 173
 174 static struct fujitsu_hotkey_t *fujitsu_hotkey;
 175
 176 static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event);
 177
 178 #if IS_ENABLED(CONFIG_LEDS_CLASS)
 179 static enum led_brightness logolamp_get(struct led_classdev *cdev);
 180 static int logolamp_set(struct led_classdev *cdev,
 181                                enum led_brightness brightness);
 182
 183 static struct led_classdev logolamp_led = {
 184  .name = "fujitsu::logolamp",
 185  .brightness_get = logolamp_get,
 186  .brightness_set_blocking = logolamp_set
 187 };
 188
 189 static enum led_brightness kblamps_get(struct led_classdev *cdev);
 190 static int kblamps_set(struct led_classdev *cdev,
 191                                enum led_brightness brightness);
 192
 193 static struct led_classdev kblamps_led = {
 194  .name = "fujitsu::kblamps",
 195  .brightness_get = kblamps_get,
 196  .brightness_set_blocking = kblamps_set
 197 };
 198
 199 static enum led_brightness radio_led_get(struct led_classdev *cdev);
 200 static int radio_led_set(struct led_classdev *cdev,
 201                                enum led_brightness brightness);
 202
 203 static struct led_classdev radio_led = {
 204  .name = "fujitsu::radio_led",
 205  .default_trigger = "rfkill-any",
 206  .brightness_get = radio_led_get,
 207  .brightness_set_blocking = radio_led_set
 208 };
 209
 210 static enum led_brightness eco_led_get(struct led_classdev *cdev);
 211 static int eco_led_set(struct led_classdev *cdev,
 212                                enum led_brightness brightness);
 213
 214 static struct led_classdev eco_led = {
 215  .name = "fujitsu::eco_led",
 216  .brightness_get = eco_led_get,
 217  .brightness_set_blocking = eco_led_set
 218 };
 219 #endif
 220
 221 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
 222 static u32 dbg_level = 0x03;
 223 #endif
 224
 225 static void acpi_fujitsu_notify(struct acpi_device *device, u32 event);
 226
 227 /* Fujitsu ACPI interface function */
 228
 229 static int call_fext_func(int cmd, int arg0, int arg1, int arg2)
 230 {
 231         acpi_status status = AE_OK;
 232         union acpi_object params[4] = {
 233         { .type = ACPI_TYPE_INTEGER },
 234         { .type = ACPI_TYPE_INTEGER },
 235         { .type = ACPI_TYPE_INTEGER },
 236         { .type = ACPI_TYPE_INTEGER }
 237         };
 238         struct acpi_object_list arg_list = { 4, &params[0] };
 239         unsigned long long value;
 240         acpi_handle handle = NULL;
 241
 242         status = acpi_get_handle(fujitsu_hotkey->acpi_handle, "FUNC", &handle);
 243         if (ACPI_FAILURE(status)) {
 244                 vdbg_printk(FUJLAPTOP_DBG_ERROR,
 245                                 "FUNC interface is not present\n");
 246                 return -ENODEV;
 247         }
 248
 249         params[0].integer.value = cmd;
 250         params[1].integer.value = arg0;
 251         params[2].integer.value = arg1;
 252         params[3].integer.value = arg2;
 253
 254         status = acpi_evaluate_integer(handle, NULL, &arg_list, &value);
 255         if (ACPI_FAILURE(status)) {
 256                 vdbg_printk(FUJLAPTOP_DBG_WARN,
 257                         "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) call failed\n",
 258                                 cmd, arg0, arg1, arg2);
 259                 return -ENODEV;
 260         }
 261
 262         vdbg_printk(FUJLAPTOP_DBG_TRACE,
 263                 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
 264                         cmd, arg0, arg1, arg2, (int)value);
 265         return value;
 266 }
 267
 268 #if IS_ENABLED(CONFIG_LEDS_CLASS)
 269 /* LED class callbacks */
 270
 271 static int logolamp_set(struct led_classdev *cdev,
 272                                enum led_brightness brightness)
 273 {
 274         int poweron = FUNC_LED_ON, always = FUNC_LED_ON;
 275         int ret;
 276
 277         if (brightness < LED_HALF)
 278                 poweron = FUNC_LED_OFF;
 279
 280         if (brightness < LED_FULL)
 281                 always = FUNC_LED_OFF;
 282
 283         ret = call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, poweron);
 284         if (ret < 0)
 285                 return ret;
 286
 287         return call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, always);
 288 }
 289
 290 static int kblamps_set(struct led_classdev *cdev,
 291                                enum led_brightness brightness)
 292 {
 293         if (brightness >= LED_FULL)
 294                 return call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_ON);
 295         else
 296                 return call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_OFF);
 297 }
 298
 299 static int radio_led_set(struct led_classdev *cdev,
 300                                 enum led_brightness brightness)
 301 {
 302         if (brightness >= LED_FULL)
 303                 return call_fext_func(FUNC_RFKILL, 0x5, RADIO_LED_ON, RADIO_LED_ON);
 304         else
 305                 return call_fext_func(FUNC_RFKILL, 0x5, RADIO_LED_ON, 0x0);
 306 }
 307
 308 static int eco_led_set(struct led_classdev *cdev,
 309                                 enum led_brightness brightness)
 310 {
 311         int curr;
 312
 313         curr = call_fext_func(FUNC_LEDS, 0x2, ECO_LED, 0x0);
 314         if (brightness >= LED_FULL)
 315                 return call_fext_func(FUNC_LEDS, 0x1, ECO_LED, curr | ECO_LED_ON);
 316         else
 317                 return call_fext_func(FUNC_LEDS, 0x1, ECO_LED, curr & ~ECO_LED_ON);
 318 }
 319
 320 static enum led_brightness logolamp_get(struct led_classdev *cdev)
 321 {
 322         int ret;
 323
 324         ret = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
 325         if (ret == FUNC_LED_ON)
 326                 return LED_FULL;
 327
 328         ret = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
 329         if (ret == FUNC_LED_ON)
 330                 return LED_HALF;
 331
 332         return LED_OFF;
 333 }
 334
 335 static enum led_brightness kblamps_get(struct led_classdev *cdev)
 336 {
 337         enum led_brightness brightness = LED_OFF;
 338
 339         if (call_fext_func(FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
 340                 brightness = LED_FULL;
 341
 342         return brightness;
 343 }
 344
 345 static enum led_brightness radio_led_get(struct led_classdev *cdev)
 346 {
 347         enum led_brightness brightness = LED_OFF;
 348
 349         if (call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0) & RADIO_LED_ON)
 350                 brightness = LED_FULL;
 351
 352         return brightness;
 353 }
 354
 355 static enum led_brightness eco_led_get(struct led_classdev *cdev)
 356 {
 357         enum led_brightness brightness = LED_OFF;
 358
 359         if (call_fext_func(FUNC_LEDS, 0x2, ECO_LED, 0x0) & ECO_LED_ON)
 360                 brightness = LED_FULL;
 361
 362         return brightness;
 363 }
 364 #endif
 365
 366 /* Hardware access for LCD brightness control */
 367
 368 static int set_lcd_level(int level)
 369 {
 370         acpi_status status = AE_OK;
 371         acpi_handle handle = NULL;
 372
 373         vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBLL [%d]\n",
 374                     level);
 375
 376         if (level < 0 || level >= fujitsu->max_brightness)
 377                 return -EINVAL;
 378
 379         status = acpi_get_handle(fujitsu->acpi_handle, "SBLL", &handle);
 380         if (ACPI_FAILURE(status)) {
 381                 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n");
 382                 return -ENODEV;
 383         }
 384
 385
 386         status = acpi_execute_simple_method(handle, NULL, level);
 387         if (ACPI_FAILURE(status))
 388                 return -ENODEV;
 389
 390         return 0;
 391 }
 392
 393 static int set_lcd_level_alt(int level)
 394 {
 395         acpi_status status = AE_OK;
 396         acpi_handle handle = NULL;
 397
 398         vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBL2 [%d]\n",
 399                     level);
 400
 401         if (level < 0 || level >= fujitsu->max_brightness)
 402                 return -EINVAL;
 403
 404         status = acpi_get_handle(fujitsu->acpi_handle, "SBL2", &handle);
 405         if (ACPI_FAILURE(status)) {
 406                 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n");
 407                 return -ENODEV;
 408         }
 409
 410         status = acpi_execute_simple_method(handle, NULL, level);
 411         if (ACPI_FAILURE(status))
 412                 return -ENODEV;
 413
 414         return 0;
 415 }
 416
 417 static int get_lcd_level(void)
 418 {
 419         unsigned long long state = 0;
 420         acpi_status status = AE_OK;
 421
 422         vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLL\n");
 423
 424         status =
 425             acpi_evaluate_integer(fujitsu->acpi_handle, "GBLL", NULL, &state);
 426         if (ACPI_FAILURE(status))
 427                 return 0;
 428
 429         fujitsu->brightness_level = state & 0x0fffffff;
 430
 431         if (state & 0x80000000)
 432                 fujitsu->brightness_changed = 1;
 433         else
 434                 fujitsu->brightness_changed = 0;
 435
 436         return fujitsu->brightness_level;
 437 }
 438
 439 static int get_max_brightness(void)
 440 {
 441         unsigned long long state = 0;
 442         acpi_status status = AE_OK;
 443
 444         vdbg_printk(FUJLAPTOP_DBG_TRACE, "get max lcd level via RBLL\n");
 445
 446         status =
 447             acpi_evaluate_integer(fujitsu->acpi_handle, "RBLL", NULL, &state);
 448         if (ACPI_FAILURE(status))
 449                 return -1;
 450
 451         fujitsu->max_brightness = state;
 452
 453         return fujitsu->max_brightness;
 454 }
 455
 456 /* Backlight device stuff */
 457
 458 static int bl_get_brightness(struct backlight_device *b)
 459 {
 460         return get_lcd_level();
 461 }
 462
 463 static int bl_update_status(struct backlight_device *b)
 464 {
 465         int ret;
 466         if (b->props.power == FB_BLANK_POWERDOWN)
 467                 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
 468         else
 469                 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
 470         if (ret != 0)
 471                 vdbg_printk(FUJLAPTOP_DBG_ERROR,
 472                         "Unable to adjust backlight power, error code %i\n",
 473                         ret);
 474
 475         if (use_alt_lcd_levels)
 476                 ret = set_lcd_level_alt(b->props.brightness);
 477         else
 478                 ret = set_lcd_level(b->props.brightness);
 479         if (ret != 0)
 480                 vdbg_printk(FUJLAPTOP_DBG_ERROR,
 481                         "Unable to adjust LCD brightness, error code %i\n",
 482                         ret);
 483         return ret;
 484 }
 485
 486 static const struct backlight_ops fujitsubl_ops = {
 487         .get_brightness = bl_get_brightness,
 488         .update_status = bl_update_status,
 489 };
 490
 491 /* Platform LCD brightness device */
 492
 493 static ssize_t
 494 show_max_brightness(struct device *dev,
 495                     struct device_attribute *attr, char *buf)
 496 {
 497
 498         int ret;
 499
 500         ret = get_max_brightness();
 501         if (ret < 0)
 502                 return ret;
 503
 504         return sprintf(buf, "%i\n", ret);
 505 }
 506
 507 static ssize_t
 508 show_brightness_changed(struct device *dev,
 509                         struct device_attribute *attr, char *buf)
 510 {
 511
 512         int ret;
 513
 514         ret = fujitsu->brightness_changed;
 515         if (ret < 0)
 516                 return ret;
 517
 518         return sprintf(buf, "%i\n", ret);
 519 }
 520
 521 static ssize_t show_lcd_level(struct device *dev,
 522                               struct device_attribute *attr, char *buf)
 523 {
 524
 525         int ret;
 526
 527         ret = get_lcd_level();
 528         if (ret < 0)
 529                 return ret;
 530
 531         return sprintf(buf, "%i\n", ret);
 532 }
 533
 534 static ssize_t store_lcd_level(struct device *dev,
 535                                struct device_attribute *attr, const char *buf,
 536                                size_t count)
 537 {
 538
 539         int level, ret;
 540
 541         if (sscanf(buf, "%i", &level) != 1
 542             || (level < 0 || level >= fujitsu->max_brightness))
 543                 return -EINVAL;
 544
 545         if (use_alt_lcd_levels)
 546                 ret = set_lcd_level_alt(level);
 547         else
 548                 ret = set_lcd_level(level);
 549         if (ret < 0)
 550                 return ret;
 551
 552         ret = get_lcd_level();
 553         if (ret < 0)
 554                 return ret;
 555
 556         return count;
 557 }
 558
 559 static ssize_t
 560 ignore_store(struct device *dev,
 561              struct device_attribute *attr, const char *buf, size_t count)
 562 {
 563         return count;
 564 }
 565
 566 static ssize_t
 567 show_lid_state(struct device *dev,
 568                         struct device_attribute *attr, char *buf)
 569 {
 570         if (!(fujitsu_hotkey->rfkill_supported & 0x100))
 571                 return sprintf(buf, "unknown\n");
 572         if (fujitsu_hotkey->rfkill_state & 0x100)
 573                 return sprintf(buf, "open\n");
 574         else
 575                 return sprintf(buf, "closed\n");
 576 }
 577
 578 static ssize_t
 579 show_dock_state(struct device *dev,
 580                         struct device_attribute *attr, char *buf)
 581 {
 582         if (!(fujitsu_hotkey->rfkill_supported & 0x200))
 583                 return sprintf(buf, "unknown\n");
 584         if (fujitsu_hotkey->rfkill_state & 0x200)
 585                 return sprintf(buf, "docked\n");
 586         else
 587                 return sprintf(buf, "undocked\n");
 588 }
 589
 590 static ssize_t
 591 show_radios_state(struct device *dev,
 592                         struct device_attribute *attr, char *buf)
 593 {
 594         if (!(fujitsu_hotkey->rfkill_supported & 0x20))
 595                 return sprintf(buf, "unknown\n");
 596         if (fujitsu_hotkey->rfkill_state & 0x20)
 597                 return sprintf(buf, "on\n");
 598         else
 599                 return sprintf(buf, "killed\n");
 600 }
 601
 602 static DEVICE_ATTR(max_brightness, 0444, show_max_brightness, ignore_store);
 603 static DEVICE_ATTR(brightness_changed, 0444, show_brightness_changed,
 604                    ignore_store);
 605 static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
 606 static DEVICE_ATTR(lid, 0444, show_lid_state, ignore_store);
 607 static DEVICE_ATTR(dock, 0444, show_dock_state, ignore_store);
 608 static DEVICE_ATTR(radios, 0444, show_radios_state, ignore_store);
 609
 610 static struct attribute *fujitsupf_attributes[] = {
 611         &dev_attr_brightness_changed.attr,
 612         &dev_attr_max_brightness.attr,
 613         &dev_attr_lcd_level.attr,
 614         &dev_attr_lid.attr,
 615         &dev_attr_dock.attr,
 616         &dev_attr_radios.attr,
 617         NULL
 618 };
 619
 620 static struct attribute_group fujitsupf_attribute_group = {
 621         .attrs = fujitsupf_attributes
 622 };
 623
 624 static struct platform_driver fujitsupf_driver = {
 625         .driver = {
 626                    .name = "fujitsu-laptop",
 627                    }
 628 };
 629
 630 static void __init dmi_check_cb_common(const struct dmi_system_id *id)
 631 {
 632         pr_info("Identified laptop model '%s'\n", id->ident);
 633         if (use_alt_lcd_levels == -1) {
 634                 if (acpi_has_method(NULL,
 635                                 "\\_SB.PCI0.LPCB.FJEX.SBL2"))
 636                         use_alt_lcd_levels = 1;
 637                 else
 638                         use_alt_lcd_levels = 0;
 639                 vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detected usealt as "
 640                         "%i\n", use_alt_lcd_levels);
 641         }
 642 }
 643
 644 static int __init dmi_check_cb_s6410(const struct dmi_system_id *id)
 645 {
 646         dmi_check_cb_common(id);
 647         fujitsu->keycode1 = KEY_SCREENLOCK;     /* "Lock" */
 648         fujitsu->keycode2 = KEY_HELP;   /* "Mobility Center" */
 649         return 1;
 650 }
 651
 652 static int __init dmi_check_cb_s6420(const struct dmi_system_id *id)
 653 {
 654         dmi_check_cb_common(id);
 655         fujitsu->keycode1 = KEY_SCREENLOCK;     /* "Lock" */
 656         fujitsu->keycode2 = KEY_HELP;   /* "Mobility Center" */
 657         return 1;
 658 }
 659
 660 static int __init dmi_check_cb_p8010(const struct dmi_system_id *id)
 661 {
 662         dmi_check_cb_common(id);
 663         fujitsu->keycode1 = KEY_HELP;   /* "Support" */
 664         fujitsu->keycode3 = KEY_SWITCHVIDEOMODE;        /* "Presentation" */
 665         fujitsu->keycode4 = KEY_WWW;    /* "Internet" */
 666         return 1;
 667 }
 668
 669 static const struct dmi_system_id fujitsu_dmi_table[] __initconst = {
 670         {
 671          .ident = "Fujitsu Siemens S6410",
 672          .matches = {
 673                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 674                      DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
 675                      },
 676          .callback = dmi_check_cb_s6410},
 677         {
 678          .ident = "Fujitsu Siemens S6420",
 679          .matches = {
 680                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 681                      DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
 682                      },
 683          .callback = dmi_check_cb_s6420},
 684         {
 685          .ident = "Fujitsu LifeBook P8010",
 686          .matches = {
 687                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
 688                      DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
 689                      },
 690          .callback = dmi_check_cb_p8010},
 691         {}
 692 };
 693
 694 /* ACPI device for LCD brightness control */
 695
 696 static int acpi_fujitsu_add(struct acpi_device *device)
 697 {
 698         int state = 0;
 699         struct input_dev *input;
 700         int error;
 701
 702         if (!device)
 703                 return -EINVAL;
 704
 705         fujitsu->acpi_handle = device->handle;
 706         sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_DEVICE_NAME);
 707         sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
 708         device->driver_data = fujitsu;
 709
 710         fujitsu->input = input = input_allocate_device();
 711         if (!input) {
 712                 error = -ENOMEM;
 713                 goto err_stop;
 714         }
 715
 716         snprintf(fujitsu->phys, sizeof(fujitsu->phys),
 717                  "%s/video/input0", acpi_device_hid(device));
 718
 719         input->name = acpi_device_name(device);
 720         input->phys = fujitsu->phys;
 721         input->id.bustype = BUS_HOST;
 722         input->id.product = 0x06;
 723         input->dev.parent = &device->dev;
 724         input->evbit[0] = BIT(EV_KEY);
 725         set_bit(KEY_BRIGHTNESSUP, input->keybit);
 726         set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
 727         set_bit(KEY_UNKNOWN, input->keybit);
 728
 729         error = input_register_device(input);
 730         if (error)
 731                 goto err_free_input_dev;
 732
 733         error = acpi_bus_update_power(fujitsu->acpi_handle, &state);
 734         if (error) {
 735                 pr_err("Error reading power state\n");
 736                 goto err_unregister_input_dev;
 737         }
 738
 739         pr_info("ACPI: %s [%s] (%s)\n",
 740                acpi_device_name(device), acpi_device_bid(device),
 741                !device->power.state ? "on" : "off");
 742
 743         fujitsu->dev = device;
 744
 745         if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
 746                 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
 747                 if (ACPI_FAILURE
 748                     (acpi_evaluate_object
 749                      (device->handle, METHOD_NAME__INI, NULL, NULL)))
 750                         pr_err("_INI Method failed\n");
 751         }
 752
 753         /* do config (detect defaults) */
 754         use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0;
 755         disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0;
 756         vdbg_printk(FUJLAPTOP_DBG_INFO,
 757                     "config: [alt interface: %d], [adjust disable: %d]\n",
 758                     use_alt_lcd_levels, disable_brightness_adjust);
 759
 760         if (get_max_brightness() <= 0)
 761                 fujitsu->max_brightness = FUJITSU_LCD_N_LEVELS;
 762         get_lcd_level();
 763
 764         return 0;
 765
 766 err_unregister_input_dev:
 767         input_unregister_device(input);
 768         input = NULL;
 769 err_free_input_dev:
 770         input_free_device(input);
 771 err_stop:
 772         return error;
 773 }
 774
 775 static int acpi_fujitsu_remove(struct acpi_device *device)
 776 {
 777         struct fujitsu_t *fujitsu = acpi_driver_data(device);
 778         struct input_dev *input = fujitsu->input;
 779
 780         input_unregister_device(input);
 781
 782         fujitsu->acpi_handle = NULL;
 783
 784         return 0;
 785 }
 786
 787 /* Brightness notify */
 788
 789 static void acpi_fujitsu_notify(struct acpi_device *device, u32 event)
 790 {
 791         struct input_dev *input;
 792         int keycode;
 793         int oldb, newb;
 794
 795         input = fujitsu->input;
 796
 797         switch (event) {
 798         case ACPI_FUJITSU_NOTIFY_CODE1:
 799                 keycode = 0;
 800                 oldb = fujitsu->brightness_level;
 801                 get_lcd_level();
 802                 newb = fujitsu->brightness_level;
 803
 804                 vdbg_printk(FUJLAPTOP_DBG_TRACE,
 805                             "brightness button event [%i -> %i (%i)]\n",
 806                             oldb, newb, fujitsu->brightness_changed);
 807
 808                 if (oldb < newb) {
 809                         if (disable_brightness_adjust != 1) {
 810                                 if (use_alt_lcd_levels)
 811                                         set_lcd_level_alt(newb);
 812                                 else
 813                                         set_lcd_level(newb);
 814                         }
 815                         keycode = KEY_BRIGHTNESSUP;
 816                 } else if (oldb > newb) {
 817                         if (disable_brightness_adjust != 1) {
 818                                 if (use_alt_lcd_levels)
 819                                         set_lcd_level_alt(newb);
 820                                 else
 821                                         set_lcd_level(newb);
 822                         }
 823                         keycode = KEY_BRIGHTNESSDOWN;
 824                 }
 825                 break;
 826         default:
 827                 keycode = KEY_UNKNOWN;
 828                 vdbg_printk(FUJLAPTOP_DBG_WARN,
 829                             "unsupported event [0x%x]\n", event);
 830                 break;
 831         }
 832
 833         if (keycode != 0) {
 834                 input_report_key(input, keycode, 1);
 835                 input_sync(input);
 836                 input_report_key(input, keycode, 0);
 837                 input_sync(input);
 838         }
 839 }
 840
 841 /* ACPI device for hotkey handling */
 842
 843 static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
 844 {
 845         int result = 0;
 846         int state = 0;
 847         struct input_dev *input;
 848         int error;
 849         int i;
 850
 851         if (!device)
 852                 return -EINVAL;
 853
 854         fujitsu_hotkey->acpi_handle = device->handle;
 855         sprintf(acpi_device_name(device), "%s",
 856                 ACPI_FUJITSU_HOTKEY_DEVICE_NAME);
 857         sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
 858         device->driver_data = fujitsu_hotkey;
 859
 860         /* kfifo */
 861         spin_lock_init(&fujitsu_hotkey->fifo_lock);
 862         error = kfifo_alloc(&fujitsu_hotkey->fifo, RINGBUFFERSIZE * sizeof(int),
 863                         GFP_KERNEL);
 864         if (error) {
 865                 pr_err("kfifo_alloc failed\n");
 866                 goto err_stop;
 867         }
 868
 869         fujitsu_hotkey->input = input = input_allocate_device();
 870         if (!input) {
 871                 error = -ENOMEM;
 872                 goto err_free_fifo;
 873         }
 874
 875         snprintf(fujitsu_hotkey->phys, sizeof(fujitsu_hotkey->phys),
 876                  "%s/video/input0", acpi_device_hid(device));
 877
 878         input->name = acpi_device_name(device);
 879         input->phys = fujitsu_hotkey->phys;
 880         input->id.bustype = BUS_HOST;
 881         input->id.product = 0x06;
 882         input->dev.parent = &device->dev;
 883
 884         set_bit(EV_KEY, input->evbit);
 885         set_bit(fujitsu->keycode1, input->keybit);
 886         set_bit(fujitsu->keycode2, input->keybit);
 887         set_bit(fujitsu->keycode3, input->keybit);
 888         set_bit(fujitsu->keycode4, input->keybit);
 889         set_bit(fujitsu->keycode5, input->keybit);
 890         set_bit(KEY_TOUCHPAD_TOGGLE, input->keybit);
 891         set_bit(KEY_UNKNOWN, input->keybit);
 892
 893         error = input_register_device(input);
 894         if (error)
 895                 goto err_free_input_dev;
 896
 897         error = acpi_bus_update_power(fujitsu_hotkey->acpi_handle, &state);
 898         if (error) {
 899                 pr_err("Error reading power state\n");
 900                 goto err_unregister_input_dev;
 901         }
 902
 903         pr_info("ACPI: %s [%s] (%s)\n",
 904                 acpi_device_name(device), acpi_device_bid(device),
 905                 !device->power.state ? "on" : "off");
 906
 907         fujitsu_hotkey->dev = device;
 908
 909         if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
 910                 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
 911                 if (ACPI_FAILURE
 912                     (acpi_evaluate_object
 913                      (device->handle, METHOD_NAME__INI, NULL, NULL)))
 914                         pr_err("_INI Method failed\n");
 915         }
 916
 917         i = 0;
 918         while (call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0
 919                 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE)
 920                 ; /* No action, result is discarded */
 921         vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
 922
 923         fujitsu_hotkey->rfkill_supported =
 924                 call_fext_func(FUNC_RFKILL, 0x0, 0x0, 0x0);
 925
 926         /* Make sure our bitmask of supported functions is cleared if the
 927            RFKILL function block is not implemented, like on the S7020. */
 928         if (fujitsu_hotkey->rfkill_supported == UNSUPPORTED_CMD)
 929                 fujitsu_hotkey->rfkill_supported = 0;
 930
 931         if (fujitsu_hotkey->rfkill_supported)
 932                 fujitsu_hotkey->rfkill_state =
 933                         call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
 934
 935         /* Suspect this is a keymap of the application panel, print it */
 936         pr_info("BTNI: [0x%x]\n", call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0));
 937
 938 #if IS_ENABLED(CONFIG_LEDS_CLASS)
 939         if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
 940                 result = led_classdev_register(&fujitsu->pf_device->dev,
 941                                                 &logolamp_led);
 942                 if (result == 0) {
 943                         fujitsu_hotkey->logolamp_registered = 1;
 944                 } else {
 945                         pr_err("Could not register LED handler for logo lamp, error %i\n",
 946                                result);
 947                 }
 948         }
 949
 950         if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
 951            (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
 952                 result = led_classdev_register(&fujitsu->pf_device->dev,
 953                                                 &kblamps_led);
 954                 if (result == 0) {
 955                         fujitsu_hotkey->kblamps_registered = 1;
 956                 } else {
 957                         pr_err("Could not register LED handler for keyboard lamps, error %i\n",
 958                                result);
 959                 }
 960         }
 961
 962         /*
 963          * BTNI bit 24 seems to indicate the presence of a radio toggle
 964          * button in place of a slide switch, and all such machines appear
 965          * to also have an RF LED.  Therefore use bit 24 as an indicator
 966          * that an RF LED is present.
 967          */
 968         if (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) & BIT(24)) {
 969                 result = led_classdev_register(&fujitsu->pf_device->dev,
 970                                                 &radio_led);
 971                 if (result == 0) {
 972                         fujitsu_hotkey->radio_led_registered = 1;
 973                 } else {
 974                         pr_err("Could not register LED handler for radio LED, error %i\n",
 975                                result);
 976                 }
 977         }
 978
 979         /* Support for eco led is not always signaled in bit corresponding
 980          * to the bit used to control the led. According to the DSDT table,
 981          * bit 14 seems to indicate presence of said led as well.
 982          * Confirm by testing the status.
 983         */
 984         if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & BIT(14)) &&
 985            (call_fext_func(FUNC_LEDS, 0x2, ECO_LED, 0x0) != UNSUPPORTED_CMD)) {
 986                 result = led_classdev_register(&fujitsu->pf_device->dev,
 987                                                 &eco_led);
 988                 if (result == 0) {
 989                         fujitsu_hotkey->eco_led_registered = 1;
 990                 } else {
 991                         pr_err("Could not register LED handler for eco LED, error %i\n",
 992                                result);
 993                 }
 994         }
 995 #endif
 996
 997         return result;
 998
 999 err_unregister_input_dev:
1000         input_unregister_device(input);
1001         input = NULL;
1002 err_free_input_dev:
1003         input_free_device(input);
1004 err_free_fifo:
1005         kfifo_free(&fujitsu_hotkey->fifo);
1006 err_stop:
1007         return error;
1008 }
1009
1010 static int acpi_fujitsu_hotkey_remove(struct acpi_device *device)
1011 {
1012         struct fujitsu_hotkey_t *fujitsu_hotkey = acpi_driver_data(device);
1013         struct input_dev *input = fujitsu_hotkey->input;
1014
1015 #if IS_ENABLED(CONFIG_LEDS_CLASS)
1016         if (fujitsu_hotkey->logolamp_registered)
1017                 led_classdev_unregister(&logolamp_led);
1018
1019         if (fujitsu_hotkey->kblamps_registered)
1020                 led_classdev_unregister(&kblamps_led);
1021
1022         if (fujitsu_hotkey->radio_led_registered)
1023                 led_classdev_unregister(&radio_led);
1024
1025         if (fujitsu_hotkey->eco_led_registered)
1026                 led_classdev_unregister(&eco_led);
1027 #endif
1028
1029         input_unregister_device(input);
1030
1031         kfifo_free(&fujitsu_hotkey->fifo);
1032
1033         fujitsu_hotkey->acpi_handle = NULL;
1034
1035         return 0;
1036 }
1037
1038 static void acpi_fujitsu_hotkey_press(int keycode)
1039 {
1040         struct input_dev *input = fujitsu_hotkey->input;
1041         int status;
1042
1043         status = kfifo_in_locked(&fujitsu_hotkey->fifo,
1044                                  (unsigned char *)&keycode, sizeof(keycode),
1045                                  &fujitsu_hotkey->fifo_lock);
1046         if (status != sizeof(keycode)) {
1047                 vdbg_printk(FUJLAPTOP_DBG_WARN,
1048                             "Could not push keycode [0x%x]\n", keycode);
1049                 return;
1050         }
1051         input_report_key(input, keycode, 1);
1052         input_sync(input);
1053         vdbg_printk(FUJLAPTOP_DBG_TRACE,
1054                     "Push keycode into ringbuffer [%d]\n", keycode);
1055 }
1056
1057 static void acpi_fujitsu_hotkey_release(void)
1058 {
1059         struct input_dev *input = fujitsu_hotkey->input;
1060         int keycode, status;
1061
1062         while (true) {
1063                 status = kfifo_out_locked(&fujitsu_hotkey->fifo,
1064                                           (unsigned char *)&keycode,
1065                                           sizeof(keycode),
1066                                           &fujitsu_hotkey->fifo_lock);
1067                 if (status != sizeof(keycode))
1068                         return;
1069                 input_report_key(input, keycode, 0);
1070                 input_sync(input);
1071                 vdbg_printk(FUJLAPTOP_DBG_TRACE,
1072                             "Pop keycode from ringbuffer [%d]\n", keycode);
1073         }
1074 }
1075
1076 static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
1077 {
1078         struct input_dev *input;
1079         int keycode;
1080         unsigned int irb = 1;
1081         int i;
1082
1083         input = fujitsu_hotkey->input;
1084
1085         if (event != ACPI_FUJITSU_NOTIFY_CODE1) {
1086                 keycode = KEY_UNKNOWN;
1087                 vdbg_printk(FUJLAPTOP_DBG_WARN,
1088                             "Unsupported event [0x%x]\n", event);
1089                 input_report_key(input, keycode, 1);
1090                 input_sync(input);
1091                 input_report_key(input, keycode, 0);
1092                 input_sync(input);
1093                 return;
1094         }
1095
1096         if (fujitsu_hotkey->rfkill_supported)
1097                 fujitsu_hotkey->rfkill_state =
1098                         call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
1099
1100         i = 0;
1101         while ((irb =
1102                 call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0
1103                         && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
1104                 switch (irb & 0x4ff) {
1105                 case KEY1_CODE:
1106                         keycode = fujitsu->keycode1;
1107                         break;
1108                 case KEY2_CODE:
1109                         keycode = fujitsu->keycode2;
1110                         break;
1111                 case KEY3_CODE:
1112                         keycode = fujitsu->keycode3;
1113                         break;
1114                 case KEY4_CODE:
1115                         keycode = fujitsu->keycode4;
1116                         break;
1117                 case KEY5_CODE:
1118                         keycode = fujitsu->keycode5;
1119                         break;
1120                 case 0:
1121                         keycode = 0;
1122                         break;
1123                 default:
1124                         vdbg_printk(FUJLAPTOP_DBG_WARN,
1125                                     "Unknown GIRB result [%x]\n", irb);
1126                         keycode = -1;
1127                         break;
1128                 }
1129
1130                 if (keycode > 0)
1131                         acpi_fujitsu_hotkey_press(keycode);
1132                 else if (keycode == 0)
1133                         acpi_fujitsu_hotkey_release();
1134         }
1135
1136         /* On some models (first seen on the Skylake-based Lifebook
1137          * E736/E746/E756), the touchpad toggle hotkey (Fn+F4) is
1138          * handled in software; its state is queried using FUNC_RFKILL
1139          */
1140         if ((fujitsu_hotkey->rfkill_supported & BIT(26)) &&
1141             (call_fext_func(FUNC_RFKILL, 0x1, 0x0, 0x0) & BIT(26))) {
1142                 keycode = KEY_TOUCHPAD_TOGGLE;
1143                 input_report_key(input, keycode, 1);
1144                 input_sync(input);
1145                 input_report_key(input, keycode, 0);
1146                 input_sync(input);
1147         }
1148
1149 }
1150
1151 /* Initialization */
1152
1153 static const struct acpi_device_id fujitsu_device_ids[] = {
1154         {ACPI_FUJITSU_HID, 0},
1155         {"", 0},
1156 };
1157
1158 static struct acpi_driver acpi_fujitsu_driver = {
1159         .name = ACPI_FUJITSU_DRIVER_NAME,
1160         .class = ACPI_FUJITSU_CLASS,
1161         .ids = fujitsu_device_ids,
1162         .ops = {
1163                 .add = acpi_fujitsu_add,
1164                 .remove = acpi_fujitsu_remove,
1165                 .notify = acpi_fujitsu_notify,
1166                 },
1167 };
1168
1169 static const struct acpi_device_id fujitsu_hotkey_device_ids[] = {
1170         {ACPI_FUJITSU_HOTKEY_HID, 0},
1171         {"", 0},
1172 };
1173
1174 static struct acpi_driver acpi_fujitsu_hotkey_driver = {
1175         .name = ACPI_FUJITSU_HOTKEY_DRIVER_NAME,
1176         .class = ACPI_FUJITSU_CLASS,
1177         .ids = fujitsu_hotkey_device_ids,
1178         .ops = {
1179                 .add = acpi_fujitsu_hotkey_add,
1180                 .remove = acpi_fujitsu_hotkey_remove,
1181                 .notify = acpi_fujitsu_hotkey_notify,
1182                 },
1183 };
1184
1185 static const struct acpi_device_id fujitsu_ids[] __used = {
1186         {ACPI_FUJITSU_HID, 0},
1187         {ACPI_FUJITSU_HOTKEY_HID, 0},
1188         {"", 0}
1189 };
1190 MODULE_DEVICE_TABLE(acpi, fujitsu_ids);
1191
1192 static int __init fujitsu_init(void)
1193 {
1194         int ret, result, max_brightness;
1195
1196         if (acpi_disabled)
1197                 return -ENODEV;
1198
1199         fujitsu = kzalloc(sizeof(struct fujitsu_t), GFP_KERNEL);
1200         if (!fujitsu)
1201                 return -ENOMEM;
1202         fujitsu->keycode1 = KEY_PROG1;
1203         fujitsu->keycode2 = KEY_PROG2;
1204         fujitsu->keycode3 = KEY_PROG3;
1205         fujitsu->keycode4 = KEY_PROG4;
1206         fujitsu->keycode5 = KEY_RFKILL;
1207         dmi_check_system(fujitsu_dmi_table);
1208
1209         result = acpi_bus_register_driver(&acpi_fujitsu_driver);
1210         if (result < 0) {
1211                 ret = -ENODEV;
1212                 goto fail_acpi;
1213         }
1214
1215         /* Register platform stuff */
1216
1217         fujitsu->pf_device = platform_device_alloc("fujitsu-laptop", -1);
1218         if (!fujitsu->pf_device) {
1219                 ret = -ENOMEM;
1220                 goto fail_platform_driver;
1221         }
1222
1223         ret = platform_device_add(fujitsu->pf_device);
1224         if (ret)
1225                 goto fail_platform_device1;
1226
1227         ret =
1228             sysfs_create_group(&fujitsu->pf_device->dev.kobj,
1229                                &fujitsupf_attribute_group);
1230         if (ret)
1231                 goto fail_platform_device2;
1232
1233         /* Register backlight stuff */
1234
1235         if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1236                 struct backlight_properties props;
1237
1238                 memset(&props, 0, sizeof(struct backlight_properties));
1239                 max_brightness = fujitsu->max_brightness;
1240                 props.type = BACKLIGHT_PLATFORM;
1241                 props.max_brightness = max_brightness - 1;
1242                 fujitsu->bl_device = backlight_device_register("fujitsu-laptop",
1243                                                                NULL, NULL,
1244                                                                &fujitsubl_ops,
1245                                                                &props);
1246                 if (IS_ERR(fujitsu->bl_device)) {
1247                         ret = PTR_ERR(fujitsu->bl_device);
1248                         fujitsu->bl_device = NULL;
1249                         goto fail_sysfs_group;
1250                 }
1251                 fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
1252         }
1253
1254         ret = platform_driver_register(&fujitsupf_driver);
1255         if (ret)
1256                 goto fail_backlight;
1257
1258         /* Register hotkey driver */
1259
1260         fujitsu_hotkey = kzalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL);
1261         if (!fujitsu_hotkey) {
1262                 ret = -ENOMEM;
1263                 goto fail_hotkey;
1264         }
1265
1266         result = acpi_bus_register_driver(&acpi_fujitsu_hotkey_driver);
1267         if (result < 0) {
1268                 ret = -ENODEV;
1269                 goto fail_hotkey1;
1270         }
1271
1272         /* Sync backlight power status (needs FUJ02E3 device, hence deferred) */
1273         if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1274                 if (call_fext_func(FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3)
1275                         fujitsu->bl_device->props.power = FB_BLANK_POWERDOWN;
1276                 else
1277                         fujitsu->bl_device->props.power = FB_BLANK_UNBLANK;
1278         }
1279
1280         pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n");
1281
1282         return 0;
1283
1284 fail_hotkey1:
1285         kfree(fujitsu_hotkey);
1286 fail_hotkey:
1287         platform_driver_unregister(&fujitsupf_driver);
1288 fail_backlight:
1289         backlight_device_unregister(fujitsu->bl_device);
1290 fail_sysfs_group:
1291         sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1292                            &fujitsupf_attribute_group);
1293 fail_platform_device2:
1294         platform_device_del(fujitsu->pf_device);
1295 fail_platform_device1:
1296         platform_device_put(fujitsu->pf_device);
1297 fail_platform_driver:
1298         acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1299 fail_acpi:
1300         kfree(fujitsu);
1301
1302         return ret;
1303 }
1304
1305 static void __exit fujitsu_cleanup(void)
1306 {
1307         acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver);
1308
1309         kfree(fujitsu_hotkey);
1310
1311         platform_driver_unregister(&fujitsupf_driver);
1312
1313         backlight_device_unregister(fujitsu->bl_device);
1314
1315         sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1316                            &fujitsupf_attribute_group);
1317
1318         platform_device_unregister(fujitsu->pf_device);
1319
1320         acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1321
1322         kfree(fujitsu);
1323
1324         pr_info("driver unloaded\n");
1325 }
1326
1327 module_init(fujitsu_init);
1328 module_exit(fujitsu_cleanup);
1329
1330 module_param(use_alt_lcd_levels, uint, 0644);
1331 MODULE_PARM_DESC(use_alt_lcd_levels,
1332                  "Use alternative interface for lcd_levels (needed for Lifebook s6410).");
1333 module_param(disable_brightness_adjust, uint, 0644);
1334 MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment .");
1335 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
1336 module_param_named(debug, dbg_level, uint, 0644);
1337 MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
1338 #endif
1339
1340 MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1341 MODULE_DESCRIPTION("Fujitsu laptop extras support");
1342 MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1343 MODULE_LICENSE("GPL");
1344
1345 MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
1346 MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1E6:*:cvrS6420:*");
1347 MODULE_ALIAS("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");