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 #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS     0x86
  92 #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS     0x87
  93
  94 /* FUNC interface - command values */
  95 #define FUNC_RFKILL     0x1000
  96 #define FUNC_LEDS       0x1001
  97 #define FUNC_BUTTONS    0x1002
  98 #define FUNC_BACKLIGHT  0x1004
  99
 100 /* FUNC interface - responses */
 101 #define UNSUPPORTED_CMD 0x80000000
 102
 103 #if IS_ENABLED(CONFIG_LEDS_CLASS)
 104 /* FUNC interface - LED control */
 105 #define FUNC_LED_OFF    0x1
 106 #define FUNC_LED_ON     0x30001
 107 #define KEYBOARD_LAMPS  0x100
 108 #define LOGOLAMP_POWERON 0x2000
 109 #define LOGOLAMP_ALWAYS  0x4000
 110 #define RADIO_LED_ON    0x20
 111 #endif
 112
 113 /* Hotkey details */
 114 #define KEY1_CODE       0x410   /* codes for the keys in the GIRB register */
 115 #define KEY2_CODE       0x411
 116 #define KEY3_CODE       0x412
 117 #define KEY4_CODE       0x413
 118 #define KEY5_CODE       0x420
 119
 120 #define MAX_HOTKEY_RINGBUFFER_SIZE 100
 121 #define RINGBUFFERSIZE 40
 122
 123 /* Debugging */
 124 #define FUJLAPTOP_LOG      ACPI_FUJITSU_HID ": "
 125 #define FUJLAPTOP_ERR      KERN_ERR FUJLAPTOP_LOG
 126 #define FUJLAPTOP_NOTICE   KERN_NOTICE FUJLAPTOP_LOG
 127 #define FUJLAPTOP_INFO     KERN_INFO FUJLAPTOP_LOG
 128 #define FUJLAPTOP_DEBUG    KERN_DEBUG FUJLAPTOP_LOG
 129
 130 #define FUJLAPTOP_DBG_ALL         0xffff
 131 #define FUJLAPTOP_DBG_ERROR       0x0001
 132 #define FUJLAPTOP_DBG_WARN        0x0002
 133 #define FUJLAPTOP_DBG_INFO        0x0004
 134 #define FUJLAPTOP_DBG_TRACE       0x0008
 135
 136 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
 137 #define vdbg_printk(a_dbg_level, format, arg...) \
 138         do { if (dbg_level & a_dbg_level) \
 139                 printk(FUJLAPTOP_DEBUG "%s: " format, __func__ , ## arg); \
 140         } while (0)
 141 #else
 142 #define vdbg_printk(a_dbg_level, format, arg...) \
 143         do { } while (0)
 144 #endif
 145
 146 /* Device controlling the backlight and associated keys */
 147 struct fujitsu_t {
 148         acpi_handle acpi_handle;
 149         struct acpi_device *dev;
 150         struct input_dev *input;
 151         char phys[32];
 152         struct backlight_device *bl_device;
 153         struct platform_device *pf_device;
 154         int keycode1, keycode2, keycode3, keycode4, keycode5;
 155
 156         unsigned int max_brightness;
 157         unsigned int brightness_changed;
 158         unsigned int brightness_level;
 159 };
 160
 161 static struct fujitsu_t *fujitsu;
 162 static int use_alt_lcd_levels = -1;
 163 static int disable_brightness_adjust = -1;
 164
 165 /* Device used to access other hotkeys on the laptop */
 166 struct fujitsu_hotkey_t {
 167         acpi_handle acpi_handle;
 168         struct acpi_device *dev;
 169         struct input_dev *input;
 170         char phys[32];
 171         struct platform_device *pf_device;
 172         struct kfifo fifo;
 173         spinlock_t fifo_lock;
 174         int rfkill_supported;
 175         int rfkill_state;
 176         int logolamp_registered;
 177         int kblamps_registered;
 178         int radio_led_registered;
 179 };
 180
 181 static struct fujitsu_hotkey_t *fujitsu_hotkey;
 182
 183 static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event);
 184
 185 #if IS_ENABLED(CONFIG_LEDS_CLASS)
 186 static enum led_brightness logolamp_get(struct led_classdev *cdev);
 187 static void logolamp_set(struct led_classdev *cdev,
 188                                enum led_brightness brightness);
 189
 190 static struct led_classdev logolamp_led = {
 191  .name = "fujitsu::logolamp",
 192  .brightness_get = logolamp_get,
 193  .brightness_set = logolamp_set
 194 };
 195
 196 static enum led_brightness kblamps_get(struct led_classdev *cdev);
 197 static void kblamps_set(struct led_classdev *cdev,
 198                                enum led_brightness brightness);
 199
 200 static struct led_classdev kblamps_led = {
 201  .name = "fujitsu::kblamps",
 202  .brightness_get = kblamps_get,
 203  .brightness_set = kblamps_set
 204 };
 205
 206 static enum led_brightness radio_led_get(struct led_classdev *cdev);
 207 static void radio_led_set(struct led_classdev *cdev,
 208                                enum led_brightness brightness);
 209
 210 static struct led_classdev radio_led = {
 211  .name = "fujitsu::radio_led",
 212  .brightness_get = radio_led_get,
 213  .brightness_set = radio_led_set
 214 };
 215 #endif
 216
 217 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
 218 static u32 dbg_level = 0x03;
 219 #endif
 220
 221 static void acpi_fujitsu_notify(struct acpi_device *device, u32 event);
 222
 223 /* Fujitsu ACPI interface function */
 224
 225 static int call_fext_func(int cmd, int arg0, int arg1, int arg2)
 226 {
 227         acpi_status status = AE_OK;
 228         union acpi_object params[4] = {
 229         { .type = ACPI_TYPE_INTEGER },
 230         { .type = ACPI_TYPE_INTEGER },
 231         { .type = ACPI_TYPE_INTEGER },
 232         { .type = ACPI_TYPE_INTEGER }
 233         };
 234         struct acpi_object_list arg_list = { 4, &params[0] };
 235         unsigned long long value;
 236         acpi_handle handle = NULL;
 237
 238         status = acpi_get_handle(fujitsu_hotkey->acpi_handle, "FUNC", &handle);
 239         if (ACPI_FAILURE(status)) {
 240                 vdbg_printk(FUJLAPTOP_DBG_ERROR,
 241                                 "FUNC interface is not present\n");
 242                 return -ENODEV;
 243         }
 244
 245         params[0].integer.value = cmd;
 246         params[1].integer.value = arg0;
 247         params[2].integer.value = arg1;
 248         params[3].integer.value = arg2;
 249
 250         status = acpi_evaluate_integer(handle, NULL, &arg_list, &value);
 251         if (ACPI_FAILURE(status)) {
 252                 vdbg_printk(FUJLAPTOP_DBG_WARN,
 253                         "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) call failed\n",
 254                                 cmd, arg0, arg1, arg2);
 255                 return -ENODEV;
 256         }
 257
 258         vdbg_printk(FUJLAPTOP_DBG_TRACE,
 259                 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
 260                         cmd, arg0, arg1, arg2, (int)value);
 261         return value;
 262 }
 263
 264 #if IS_ENABLED(CONFIG_LEDS_CLASS)
 265 /* LED class callbacks */
 266
 267 static void logolamp_set(struct led_classdev *cdev,
 268                                enum led_brightness brightness)
 269 {
 270         if (brightness >= LED_FULL) {
 271                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
 272                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_ON);
 273         } else if (brightness >= LED_HALF) {
 274                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
 275                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_OFF);
 276         } else {
 277                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_OFF);
 278         }
 279 }
 280
 281 static void kblamps_set(struct led_classdev *cdev,
 282                                enum led_brightness brightness)
 283 {
 284         if (brightness >= LED_FULL)
 285                 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_ON);
 286         else
 287                 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_OFF);
 288 }
 289
 290 static void radio_led_set(struct led_classdev *cdev,
 291                                 enum led_brightness brightness)
 292 {
 293         if (brightness >= LED_FULL)
 294                 call_fext_func(FUNC_RFKILL, 0x5, RADIO_LED_ON, RADIO_LED_ON);
 295         else
 296                 call_fext_func(FUNC_RFKILL, 0x5, RADIO_LED_ON, 0x0);
 297 }
 298
 299 static enum led_brightness logolamp_get(struct led_classdev *cdev)
 300 {
 301         enum led_brightness brightness = LED_OFF;
 302         int poweron, always;
 303
 304         poweron = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
 305         if (poweron == FUNC_LED_ON) {
 306                 brightness = LED_HALF;
 307                 always = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
 308                 if (always == FUNC_LED_ON)
 309                         brightness = LED_FULL;
 310         }
 311         return brightness;
 312 }
 313
 314 static enum led_brightness kblamps_get(struct led_classdev *cdev)
 315 {
 316         enum led_brightness brightness = LED_OFF;
 317
 318         if (call_fext_func(FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
 319                 brightness = LED_FULL;
 320
 321         return brightness;
 322 }
 323
 324 static enum led_brightness radio_led_get(struct led_classdev *cdev)
 325 {
 326         enum led_brightness brightness = LED_OFF;
 327
 328         if (call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0) & RADIO_LED_ON)
 329                 brightness = LED_FULL;
 330
 331         return brightness;
 332 }
 333 #endif
 334
 335 /* Hardware access for LCD brightness control */
 336
 337 static int set_lcd_level(int level)
 338 {
 339         acpi_status status = AE_OK;
 340         acpi_handle handle = NULL;
 341
 342         vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBLL [%d]\n",
 343                     level);
 344
 345         if (level < 0 || level >= fujitsu->max_brightness)
 346                 return -EINVAL;
 347
 348         status = acpi_get_handle(fujitsu->acpi_handle, "SBLL", &handle);
 349         if (ACPI_FAILURE(status)) {
 350                 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n");
 351                 return -ENODEV;
 352         }
 353
 354
 355         status = acpi_execute_simple_method(handle, NULL, level);
 356         if (ACPI_FAILURE(status))
 357                 return -ENODEV;
 358
 359         return 0;
 360 }
 361
 362 static int set_lcd_level_alt(int level)
 363 {
 364         acpi_status status = AE_OK;
 365         acpi_handle handle = NULL;
 366
 367         vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBL2 [%d]\n",
 368                     level);
 369
 370         if (level < 0 || level >= fujitsu->max_brightness)
 371                 return -EINVAL;
 372
 373         status = acpi_get_handle(fujitsu->acpi_handle, "SBL2", &handle);
 374         if (ACPI_FAILURE(status)) {
 375                 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n");
 376                 return -ENODEV;
 377         }
 378
 379         status = acpi_execute_simple_method(handle, NULL, level);
 380         if (ACPI_FAILURE(status))
 381                 return -ENODEV;
 382
 383         return 0;
 384 }
 385
 386 static int get_lcd_level(void)
 387 {
 388         unsigned long long state = 0;
 389         acpi_status status = AE_OK;
 390
 391         vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLL\n");
 392
 393         status =
 394             acpi_evaluate_integer(fujitsu->acpi_handle, "GBLL", NULL, &state);
 395         if (ACPI_FAILURE(status))
 396                 return 0;
 397
 398         fujitsu->brightness_level = state & 0x0fffffff;
 399
 400         if (state & 0x80000000)
 401                 fujitsu->brightness_changed = 1;
 402         else
 403                 fujitsu->brightness_changed = 0;
 404
 405         return fujitsu->brightness_level;
 406 }
 407
 408 static int get_max_brightness(void)
 409 {
 410         unsigned long long state = 0;
 411         acpi_status status = AE_OK;
 412
 413         vdbg_printk(FUJLAPTOP_DBG_TRACE, "get max lcd level via RBLL\n");
 414
 415         status =
 416             acpi_evaluate_integer(fujitsu->acpi_handle, "RBLL", NULL, &state);
 417         if (ACPI_FAILURE(status))
 418                 return -1;
 419
 420         fujitsu->max_brightness = state;
 421
 422         return fujitsu->max_brightness;
 423 }
 424
 425 /* Backlight device stuff */
 426
 427 static int bl_get_brightness(struct backlight_device *b)
 428 {
 429         return get_lcd_level();
 430 }
 431
 432 static int bl_update_status(struct backlight_device *b)
 433 {
 434         int ret;
 435         if (b->props.power == FB_BLANK_POWERDOWN)
 436                 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
 437         else
 438                 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
 439         if (ret != 0)
 440                 vdbg_printk(FUJLAPTOP_DBG_ERROR,
 441                         "Unable to adjust backlight power, error code %i\n",
 442                         ret);
 443
 444         if (use_alt_lcd_levels)
 445                 ret = set_lcd_level_alt(b->props.brightness);
 446         else
 447                 ret = set_lcd_level(b->props.brightness);
 448         if (ret != 0)
 449                 vdbg_printk(FUJLAPTOP_DBG_ERROR,
 450                         "Unable to adjust LCD brightness, error code %i\n",
 451                         ret);
 452         return ret;
 453 }
 454
 455 static const struct backlight_ops fujitsubl_ops = {
 456         .get_brightness = bl_get_brightness,
 457         .update_status = bl_update_status,
 458 };
 459
 460 /* Platform LCD brightness device */
 461
 462 static ssize_t
 463 show_max_brightness(struct device *dev,
 464                     struct device_attribute *attr, char *buf)
 465 {
 466
 467         int ret;
 468
 469         ret = get_max_brightness();
 470         if (ret < 0)
 471                 return ret;
 472
 473         return sprintf(buf, "%i\n", ret);
 474 }
 475
 476 static ssize_t
 477 show_brightness_changed(struct device *dev,
 478                         struct device_attribute *attr, char *buf)
 479 {
 480
 481         int ret;
 482
 483         ret = fujitsu->brightness_changed;
 484         if (ret < 0)
 485                 return ret;
 486
 487         return sprintf(buf, "%i\n", ret);
 488 }
 489
 490 static ssize_t show_lcd_level(struct device *dev,
 491                               struct device_attribute *attr, char *buf)
 492 {
 493
 494         int ret;
 495
 496         ret = get_lcd_level();
 497         if (ret < 0)
 498                 return ret;
 499
 500         return sprintf(buf, "%i\n", ret);
 501 }
 502
 503 static ssize_t store_lcd_level(struct device *dev,
 504                                struct device_attribute *attr, const char *buf,
 505                                size_t count)
 506 {
 507
 508         int level, ret;
 509
 510         if (sscanf(buf, "%i", &level) != 1
 511             || (level < 0 || level >= fujitsu->max_brightness))
 512                 return -EINVAL;
 513
 514         if (use_alt_lcd_levels)
 515                 ret = set_lcd_level_alt(level);
 516         else
 517                 ret = set_lcd_level(level);
 518         if (ret < 0)
 519                 return ret;
 520
 521         ret = get_lcd_level();
 522         if (ret < 0)
 523                 return ret;
 524
 525         return count;
 526 }
 527
 528 static ssize_t
 529 ignore_store(struct device *dev,
 530              struct device_attribute *attr, const char *buf, size_t count)
 531 {
 532         return count;
 533 }
 534
 535 static ssize_t
 536 show_lid_state(struct device *dev,
 537                         struct device_attribute *attr, char *buf)
 538 {
 539         if (!(fujitsu_hotkey->rfkill_supported & 0x100))
 540                 return sprintf(buf, "unknown\n");
 541         if (fujitsu_hotkey->rfkill_state & 0x100)
 542                 return sprintf(buf, "open\n");
 543         else
 544                 return sprintf(buf, "closed\n");
 545 }
 546
 547 static ssize_t
 548 show_dock_state(struct device *dev,
 549                         struct device_attribute *attr, char *buf)
 550 {
 551         if (!(fujitsu_hotkey->rfkill_supported & 0x200))
 552                 return sprintf(buf, "unknown\n");
 553         if (fujitsu_hotkey->rfkill_state & 0x200)
 554                 return sprintf(buf, "docked\n");
 555         else
 556                 return sprintf(buf, "undocked\n");
 557 }
 558
 559 static ssize_t
 560 show_radios_state(struct device *dev,
 561                         struct device_attribute *attr, char *buf)
 562 {
 563         if (!(fujitsu_hotkey->rfkill_supported & 0x20))
 564                 return sprintf(buf, "unknown\n");
 565         if (fujitsu_hotkey->rfkill_state & 0x20)
 566                 return sprintf(buf, "on\n");
 567         else
 568                 return sprintf(buf, "killed\n");
 569 }
 570
 571 static DEVICE_ATTR(max_brightness, 0444, show_max_brightness, ignore_store);
 572 static DEVICE_ATTR(brightness_changed, 0444, show_brightness_changed,
 573                    ignore_store);
 574 static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
 575 static DEVICE_ATTR(lid, 0444, show_lid_state, ignore_store);
 576 static DEVICE_ATTR(dock, 0444, show_dock_state, ignore_store);
 577 static DEVICE_ATTR(radios, 0444, show_radios_state, ignore_store);
 578
 579 static struct attribute *fujitsupf_attributes[] = {
 580         &dev_attr_brightness_changed.attr,
 581         &dev_attr_max_brightness.attr,
 582         &dev_attr_lcd_level.attr,
 583         &dev_attr_lid.attr,
 584         &dev_attr_dock.attr,
 585         &dev_attr_radios.attr,
 586         NULL
 587 };
 588
 589 static struct attribute_group fujitsupf_attribute_group = {
 590         .attrs = fujitsupf_attributes
 591 };
 592
 593 static struct platform_driver fujitsupf_driver = {
 594         .driver = {
 595                    .name = "fujitsu-laptop",
 596                    }
 597 };
 598
 599 static void __init dmi_check_cb_common(const struct dmi_system_id *id)
 600 {
 601         pr_info("Identified laptop model '%s'\n", id->ident);
 602         if (use_alt_lcd_levels == -1) {
 603                 if (acpi_has_method(NULL,
 604                                 "\\_SB.PCI0.LPCB.FJEX.SBL2"))
 605                         use_alt_lcd_levels = 1;
 606                 else
 607                         use_alt_lcd_levels = 0;
 608                 vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detected usealt as "
 609                         "%i\n", use_alt_lcd_levels);
 610         }
 611 }
 612
 613 static int __init dmi_check_cb_s6410(const struct dmi_system_id *id)
 614 {
 615         dmi_check_cb_common(id);
 616         fujitsu->keycode1 = KEY_SCREENLOCK;     /* "Lock" */
 617         fujitsu->keycode2 = KEY_HELP;   /* "Mobility Center" */
 618         return 1;
 619 }
 620
 621 static int __init dmi_check_cb_s6420(const struct dmi_system_id *id)
 622 {
 623         dmi_check_cb_common(id);
 624         fujitsu->keycode1 = KEY_SCREENLOCK;     /* "Lock" */
 625         fujitsu->keycode2 = KEY_HELP;   /* "Mobility Center" */
 626         return 1;
 627 }
 628
 629 static int __init dmi_check_cb_p8010(const struct dmi_system_id *id)
 630 {
 631         dmi_check_cb_common(id);
 632         fujitsu->keycode1 = KEY_HELP;   /* "Support" */
 633         fujitsu->keycode3 = KEY_SWITCHVIDEOMODE;        /* "Presentation" */
 634         fujitsu->keycode4 = KEY_WWW;    /* "Internet" */
 635         return 1;
 636 }
 637
 638 static const struct dmi_system_id fujitsu_dmi_table[] __initconst = {
 639         {
 640          .ident = "Fujitsu Siemens S6410",
 641          .matches = {
 642                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 643                      DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
 644                      },
 645          .callback = dmi_check_cb_s6410},
 646         {
 647          .ident = "Fujitsu Siemens S6420",
 648          .matches = {
 649                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 650                      DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
 651                      },
 652          .callback = dmi_check_cb_s6420},
 653         {
 654          .ident = "Fujitsu LifeBook P8010",
 655          .matches = {
 656                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
 657                      DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
 658                      },
 659          .callback = dmi_check_cb_p8010},
 660         {}
 661 };
 662
 663 /* ACPI device for LCD brightness control */
 664
 665 static int acpi_fujitsu_add(struct acpi_device *device)
 666 {
 667         int state = 0;
 668         struct input_dev *input;
 669         int error;
 670
 671         if (!device)
 672                 return -EINVAL;
 673
 674         fujitsu->acpi_handle = device->handle;
 675         sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_DEVICE_NAME);
 676         sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
 677         device->driver_data = fujitsu;
 678
 679         fujitsu->input = input = input_allocate_device();
 680         if (!input) {
 681                 error = -ENOMEM;
 682                 goto err_stop;
 683         }
 684
 685         snprintf(fujitsu->phys, sizeof(fujitsu->phys),
 686                  "%s/video/input0", acpi_device_hid(device));
 687
 688         input->name = acpi_device_name(device);
 689         input->phys = fujitsu->phys;
 690         input->id.bustype = BUS_HOST;
 691         input->id.product = 0x06;
 692         input->dev.parent = &device->dev;
 693         input->evbit[0] = BIT(EV_KEY);
 694         set_bit(KEY_BRIGHTNESSUP, input->keybit);
 695         set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
 696         set_bit(KEY_UNKNOWN, input->keybit);
 697
 698         error = input_register_device(input);
 699         if (error)
 700                 goto err_free_input_dev;
 701
 702         error = acpi_bus_update_power(fujitsu->acpi_handle, &state);
 703         if (error) {
 704                 pr_err("Error reading power state\n");
 705                 goto err_unregister_input_dev;
 706         }
 707
 708         pr_info("ACPI: %s [%s] (%s)\n",
 709                acpi_device_name(device), acpi_device_bid(device),
 710                !device->power.state ? "on" : "off");
 711
 712         fujitsu->dev = device;
 713
 714         if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
 715                 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
 716                 if (ACPI_FAILURE
 717                     (acpi_evaluate_object
 718                      (device->handle, METHOD_NAME__INI, NULL, NULL)))
 719                         pr_err("_INI Method failed\n");
 720         }
 721
 722         /* do config (detect defaults) */
 723         use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0;
 724         disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0;
 725         vdbg_printk(FUJLAPTOP_DBG_INFO,
 726                     "config: [alt interface: %d], [adjust disable: %d]\n",
 727                     use_alt_lcd_levels, disable_brightness_adjust);
 728
 729         if (get_max_brightness() <= 0)
 730                 fujitsu->max_brightness = FUJITSU_LCD_N_LEVELS;
 731         get_lcd_level();
 732
 733         return 0;
 734
 735 err_unregister_input_dev:
 736         input_unregister_device(input);
 737         input = NULL;
 738 err_free_input_dev:
 739         input_free_device(input);
 740 err_stop:
 741         return error;
 742 }
 743
 744 static int acpi_fujitsu_remove(struct acpi_device *device)
 745 {
 746         struct fujitsu_t *fujitsu = acpi_driver_data(device);
 747         struct input_dev *input = fujitsu->input;
 748
 749         input_unregister_device(input);
 750
 751         fujitsu->acpi_handle = NULL;
 752
 753         return 0;
 754 }
 755
 756 /* Brightness notify */
 757
 758 static void acpi_fujitsu_notify(struct acpi_device *device, u32 event)
 759 {
 760         struct input_dev *input;
 761         int keycode;
 762         int oldb, newb;
 763
 764         input = fujitsu->input;
 765
 766         switch (event) {
 767         case ACPI_FUJITSU_NOTIFY_CODE1:
 768                 keycode = 0;
 769                 oldb = fujitsu->brightness_level;
 770                 get_lcd_level();
 771                 newb = fujitsu->brightness_level;
 772
 773                 vdbg_printk(FUJLAPTOP_DBG_TRACE,
 774                             "brightness button event [%i -> %i (%i)]\n",
 775                             oldb, newb, fujitsu->brightness_changed);
 776
 777                 if (oldb < newb) {
 778                         if (disable_brightness_adjust != 1) {
 779                                 if (use_alt_lcd_levels)
 780                                         set_lcd_level_alt(newb);
 781                                 else
 782                                         set_lcd_level(newb);
 783                         }
 784                         keycode = KEY_BRIGHTNESSUP;
 785                 } else if (oldb > newb) {
 786                         if (disable_brightness_adjust != 1) {
 787                                 if (use_alt_lcd_levels)
 788                                         set_lcd_level_alt(newb);
 789                                 else
 790                                         set_lcd_level(newb);
 791                         }
 792                         keycode = KEY_BRIGHTNESSDOWN;
 793                 }
 794                 break;
 795         default:
 796                 keycode = KEY_UNKNOWN;
 797                 vdbg_printk(FUJLAPTOP_DBG_WARN,
 798                             "unsupported event [0x%x]\n", event);
 799                 break;
 800         }
 801
 802         if (keycode != 0) {
 803                 input_report_key(input, keycode, 1);
 804                 input_sync(input);
 805                 input_report_key(input, keycode, 0);
 806                 input_sync(input);
 807         }
 808 }
 809
 810 /* ACPI device for hotkey handling */
 811
 812 static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
 813 {
 814         int result = 0;
 815         int state = 0;
 816         struct input_dev *input;
 817         int error;
 818         int i;
 819
 820         if (!device)
 821                 return -EINVAL;
 822
 823         fujitsu_hotkey->acpi_handle = device->handle;
 824         sprintf(acpi_device_name(device), "%s",
 825                 ACPI_FUJITSU_HOTKEY_DEVICE_NAME);
 826         sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
 827         device->driver_data = fujitsu_hotkey;
 828
 829         /* kfifo */
 830         spin_lock_init(&fujitsu_hotkey->fifo_lock);
 831         error = kfifo_alloc(&fujitsu_hotkey->fifo, RINGBUFFERSIZE * sizeof(int),
 832                         GFP_KERNEL);
 833         if (error) {
 834                 pr_err("kfifo_alloc failed\n");
 835                 goto err_stop;
 836         }
 837
 838         fujitsu_hotkey->input = input = input_allocate_device();
 839         if (!input) {
 840                 error = -ENOMEM;
 841                 goto err_free_fifo;
 842         }
 843
 844         snprintf(fujitsu_hotkey->phys, sizeof(fujitsu_hotkey->phys),
 845                  "%s/video/input0", acpi_device_hid(device));
 846
 847         input->name = acpi_device_name(device);
 848         input->phys = fujitsu_hotkey->phys;
 849         input->id.bustype = BUS_HOST;
 850         input->id.product = 0x06;
 851         input->dev.parent = &device->dev;
 852
 853         set_bit(EV_KEY, input->evbit);
 854         set_bit(fujitsu->keycode1, input->keybit);
 855         set_bit(fujitsu->keycode2, input->keybit);
 856         set_bit(fujitsu->keycode3, input->keybit);
 857         set_bit(fujitsu->keycode4, input->keybit);
 858         set_bit(fujitsu->keycode5, input->keybit);
 859         set_bit(KEY_UNKNOWN, input->keybit);
 860
 861         error = input_register_device(input);
 862         if (error)
 863                 goto err_free_input_dev;
 864
 865         error = acpi_bus_update_power(fujitsu_hotkey->acpi_handle, &state);
 866         if (error) {
 867                 pr_err("Error reading power state\n");
 868                 goto err_unregister_input_dev;
 869         }
 870
 871         pr_info("ACPI: %s [%s] (%s)\n",
 872                 acpi_device_name(device), acpi_device_bid(device),
 873                 !device->power.state ? "on" : "off");
 874
 875         fujitsu_hotkey->dev = device;
 876
 877         if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
 878                 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
 879                 if (ACPI_FAILURE
 880                     (acpi_evaluate_object
 881                      (device->handle, METHOD_NAME__INI, NULL, NULL)))
 882                         pr_err("_INI Method failed\n");
 883         }
 884
 885         i = 0;
 886         while (call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0
 887                 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE)
 888                 ; /* No action, result is discarded */
 889         vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
 890
 891         fujitsu_hotkey->rfkill_supported =
 892                 call_fext_func(FUNC_RFKILL, 0x0, 0x0, 0x0);
 893
 894         /* Make sure our bitmask of supported functions is cleared if the
 895            RFKILL function block is not implemented, like on the S7020. */
 896         if (fujitsu_hotkey->rfkill_supported == UNSUPPORTED_CMD)
 897                 fujitsu_hotkey->rfkill_supported = 0;
 898
 899         if (fujitsu_hotkey->rfkill_supported)
 900                 fujitsu_hotkey->rfkill_state =
 901                         call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
 902
 903         /* Suspect this is a keymap of the application panel, print it */
 904         pr_info("BTNI: [0x%x]\n", call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0));
 905
 906 #if IS_ENABLED(CONFIG_LEDS_CLASS)
 907         if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
 908                 result = led_classdev_register(&fujitsu->pf_device->dev,
 909                                                 &logolamp_led);
 910                 if (result == 0) {
 911                         fujitsu_hotkey->logolamp_registered = 1;
 912                 } else {
 913                         pr_err("Could not register LED handler for logo lamp, error %i\n",
 914                                result);
 915                 }
 916         }
 917
 918         if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
 919            (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
 920                 result = led_classdev_register(&fujitsu->pf_device->dev,
 921                                                 &kblamps_led);
 922                 if (result == 0) {
 923                         fujitsu_hotkey->kblamps_registered = 1;
 924                 } else {
 925                         pr_err("Could not register LED handler for keyboard lamps, error %i\n",
 926                                result);
 927                 }
 928         }
 929
 930         /*
 931          * BTNI bit 24 seems to indicate the presence of a radio toggle
 932          * button in place of a slide switch, and all such machines appear
 933          * to also have an RF LED.  Therefore use bit 24 as an indicator
 934          * that an RF LED is present.
 935          */
 936         if (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) & BIT(24)) {
 937                 result = led_classdev_register(&fujitsu->pf_device->dev,
 938                                                 &radio_led);
 939                 if (result == 0) {
 940                         fujitsu_hotkey->radio_led_registered = 1;
 941                 } else {
 942                         pr_err("Could not register LED handler for radio LED, error %i\n",
 943                                result);
 944                 }
 945         }
 946 #endif
 947
 948         return result;
 949
 950 err_unregister_input_dev:
 951         input_unregister_device(input);
 952         input = NULL;
 953 err_free_input_dev:
 954         input_free_device(input);
 955 err_free_fifo:
 956         kfifo_free(&fujitsu_hotkey->fifo);
 957 err_stop:
 958         return error;
 959 }
 960
 961 static int acpi_fujitsu_hotkey_remove(struct acpi_device *device)
 962 {
 963         struct fujitsu_hotkey_t *fujitsu_hotkey = acpi_driver_data(device);
 964         struct input_dev *input = fujitsu_hotkey->input;
 965
 966 #if IS_ENABLED(CONFIG_LEDS_CLASS)
 967         if (fujitsu_hotkey->logolamp_registered)
 968                 led_classdev_unregister(&logolamp_led);
 969
 970         if (fujitsu_hotkey->kblamps_registered)
 971                 led_classdev_unregister(&kblamps_led);
 972
 973         if (fujitsu_hotkey->radio_led_registered)
 974                 led_classdev_unregister(&radio_led);
 975 #endif
 976
 977         input_unregister_device(input);
 978
 979         kfifo_free(&fujitsu_hotkey->fifo);
 980
 981         fujitsu_hotkey->acpi_handle = NULL;
 982
 983         return 0;
 984 }
 985
 986 static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
 987 {
 988         struct input_dev *input;
 989         int keycode, keycode_r;
 990         unsigned int irb = 1;
 991         int i, status;
 992
 993         input = fujitsu_hotkey->input;
 994
 995         if (fujitsu_hotkey->rfkill_supported)
 996                 fujitsu_hotkey->rfkill_state =
 997                         call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
 998
 999         switch (event) {
1000         case ACPI_FUJITSU_NOTIFY_CODE1:
1001                 i = 0;
1002                 while ((irb =
1003                         call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0
1004                                 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
1005                         switch (irb & 0x4ff) {
1006                         case KEY1_CODE:
1007                                 keycode = fujitsu->keycode1;
1008                                 break;
1009                         case KEY2_CODE:
1010                                 keycode = fujitsu->keycode2;
1011                                 break;
1012                         case KEY3_CODE:
1013                                 keycode = fujitsu->keycode3;
1014                                 break;
1015                         case KEY4_CODE:
1016                                 keycode = fujitsu->keycode4;
1017                                 break;
1018                         case KEY5_CODE:
1019                                 keycode = fujitsu->keycode5;
1020                                 break;
1021                         case 0:
1022                                 keycode = 0;
1023                                 break;
1024                         default:
1025                                 vdbg_printk(FUJLAPTOP_DBG_WARN,
1026                                             "Unknown GIRB result [%x]\n", irb);
1027                                 keycode = -1;
1028                                 break;
1029                         }
1030                         if (keycode > 0) {
1031                                 vdbg_printk(FUJLAPTOP_DBG_TRACE,
1032                                         "Push keycode into ringbuffer [%d]\n",
1033                                         keycode);
1034                                 status = kfifo_in_locked(&fujitsu_hotkey->fifo,
1035                                                    (unsigned char *)&keycode,
1036                                                    sizeof(keycode),
1037                                                    &fujitsu_hotkey->fifo_lock);
1038                                 if (status != sizeof(keycode)) {
1039                                         vdbg_printk(FUJLAPTOP_DBG_WARN,
1040                                             "Could not push keycode [0x%x]\n",
1041                                             keycode);
1042                                 } else {
1043                                         input_report_key(input, keycode, 1);
1044                                         input_sync(input);
1045                                 }
1046                         } else if (keycode == 0) {
1047                                 while ((status =
1048                                         kfifo_out_locked(
1049                                          &fujitsu_hotkey->fifo,
1050                                          (unsigned char *) &keycode_r,
1051                                          sizeof(keycode_r),
1052                                          &fujitsu_hotkey->fifo_lock))
1053                                          == sizeof(keycode_r)) {
1054                                         input_report_key(input, keycode_r, 0);
1055                                         input_sync(input);
1056                                         vdbg_printk(FUJLAPTOP_DBG_TRACE,
1057                                           "Pop keycode from ringbuffer [%d]\n",
1058                                           keycode_r);
1059                                 }
1060                         }
1061                 }
1062
1063                 break;
1064         default:
1065                 keycode = KEY_UNKNOWN;
1066                 vdbg_printk(FUJLAPTOP_DBG_WARN,
1067                             "Unsupported event [0x%x]\n", event);
1068                 input_report_key(input, keycode, 1);
1069                 input_sync(input);
1070                 input_report_key(input, keycode, 0);
1071                 input_sync(input);
1072                 break;
1073         }
1074 }
1075
1076 /* Initialization */
1077
1078 static const struct acpi_device_id fujitsu_device_ids[] = {
1079         {ACPI_FUJITSU_HID, 0},
1080         {"", 0},
1081 };
1082
1083 static struct acpi_driver acpi_fujitsu_driver = {
1084         .name = ACPI_FUJITSU_DRIVER_NAME,
1085         .class = ACPI_FUJITSU_CLASS,
1086         .ids = fujitsu_device_ids,
1087         .ops = {
1088                 .add = acpi_fujitsu_add,
1089                 .remove = acpi_fujitsu_remove,
1090                 .notify = acpi_fujitsu_notify,
1091                 },
1092 };
1093
1094 static const struct acpi_device_id fujitsu_hotkey_device_ids[] = {
1095         {ACPI_FUJITSU_HOTKEY_HID, 0},
1096         {"", 0},
1097 };
1098
1099 static struct acpi_driver acpi_fujitsu_hotkey_driver = {
1100         .name = ACPI_FUJITSU_HOTKEY_DRIVER_NAME,
1101         .class = ACPI_FUJITSU_CLASS,
1102         .ids = fujitsu_hotkey_device_ids,
1103         .ops = {
1104                 .add = acpi_fujitsu_hotkey_add,
1105                 .remove = acpi_fujitsu_hotkey_remove,
1106                 .notify = acpi_fujitsu_hotkey_notify,
1107                 },
1108 };
1109
1110 static const struct acpi_device_id fujitsu_ids[] __used = {
1111         {ACPI_FUJITSU_HID, 0},
1112         {ACPI_FUJITSU_HOTKEY_HID, 0},
1113         {"", 0}
1114 };
1115 MODULE_DEVICE_TABLE(acpi, fujitsu_ids);
1116
1117 static int __init fujitsu_init(void)
1118 {
1119         int ret, result, max_brightness;
1120
1121         if (acpi_disabled)
1122                 return -ENODEV;
1123
1124         fujitsu = kzalloc(sizeof(struct fujitsu_t), GFP_KERNEL);
1125         if (!fujitsu)
1126                 return -ENOMEM;
1127         fujitsu->keycode1 = KEY_PROG1;
1128         fujitsu->keycode2 = KEY_PROG2;
1129         fujitsu->keycode3 = KEY_PROG3;
1130         fujitsu->keycode4 = KEY_PROG4;
1131         fujitsu->keycode5 = KEY_RFKILL;
1132         dmi_check_system(fujitsu_dmi_table);
1133
1134         result = acpi_bus_register_driver(&acpi_fujitsu_driver);
1135         if (result < 0) {
1136                 ret = -ENODEV;
1137                 goto fail_acpi;
1138         }
1139
1140         /* Register platform stuff */
1141
1142         fujitsu->pf_device = platform_device_alloc("fujitsu-laptop", -1);
1143         if (!fujitsu->pf_device) {
1144                 ret = -ENOMEM;
1145                 goto fail_platform_driver;
1146         }
1147
1148         ret = platform_device_add(fujitsu->pf_device);
1149         if (ret)
1150                 goto fail_platform_device1;
1151
1152         ret =
1153             sysfs_create_group(&fujitsu->pf_device->dev.kobj,
1154                                &fujitsupf_attribute_group);
1155         if (ret)
1156                 goto fail_platform_device2;
1157
1158         /* Register backlight stuff */
1159
1160         if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1161                 struct backlight_properties props;
1162
1163                 memset(&props, 0, sizeof(struct backlight_properties));
1164                 max_brightness = fujitsu->max_brightness;
1165                 props.type = BACKLIGHT_PLATFORM;
1166                 props.max_brightness = max_brightness - 1;
1167                 fujitsu->bl_device = backlight_device_register("fujitsu-laptop",
1168                                                                NULL, NULL,
1169                                                                &fujitsubl_ops,
1170                                                                &props);
1171                 if (IS_ERR(fujitsu->bl_device)) {
1172                         ret = PTR_ERR(fujitsu->bl_device);
1173                         fujitsu->bl_device = NULL;
1174                         goto fail_sysfs_group;
1175                 }
1176                 fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
1177         }
1178
1179         ret = platform_driver_register(&fujitsupf_driver);
1180         if (ret)
1181                 goto fail_backlight;
1182
1183         /* Register hotkey driver */
1184
1185         fujitsu_hotkey = kzalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL);
1186         if (!fujitsu_hotkey) {
1187                 ret = -ENOMEM;
1188                 goto fail_hotkey;
1189         }
1190
1191         result = acpi_bus_register_driver(&acpi_fujitsu_hotkey_driver);
1192         if (result < 0) {
1193                 ret = -ENODEV;
1194                 goto fail_hotkey1;
1195         }
1196
1197         /* Sync backlight power status (needs FUJ02E3 device, hence deferred) */
1198         if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1199                 if (call_fext_func(FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3)
1200                         fujitsu->bl_device->props.power = FB_BLANK_POWERDOWN;
1201                 else
1202                         fujitsu->bl_device->props.power = FB_BLANK_UNBLANK;
1203         }
1204
1205         pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n");
1206
1207         return 0;
1208
1209 fail_hotkey1:
1210         kfree(fujitsu_hotkey);
1211 fail_hotkey:
1212         platform_driver_unregister(&fujitsupf_driver);
1213 fail_backlight:
1214         backlight_device_unregister(fujitsu->bl_device);
1215 fail_sysfs_group:
1216         sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1217                            &fujitsupf_attribute_group);
1218 fail_platform_device2:
1219         platform_device_del(fujitsu->pf_device);
1220 fail_platform_device1:
1221         platform_device_put(fujitsu->pf_device);
1222 fail_platform_driver:
1223         acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1224 fail_acpi:
1225         kfree(fujitsu);
1226
1227         return ret;
1228 }
1229
1230 static void __exit fujitsu_cleanup(void)
1231 {
1232         acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver);
1233
1234         kfree(fujitsu_hotkey);
1235
1236         platform_driver_unregister(&fujitsupf_driver);
1237
1238         backlight_device_unregister(fujitsu->bl_device);
1239
1240         sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1241                            &fujitsupf_attribute_group);
1242
1243         platform_device_unregister(fujitsu->pf_device);
1244
1245         acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1246
1247         kfree(fujitsu);
1248
1249         pr_info("driver unloaded\n");
1250 }
1251
1252 module_init(fujitsu_init);
1253 module_exit(fujitsu_cleanup);
1254
1255 module_param(use_alt_lcd_levels, uint, 0644);
1256 MODULE_PARM_DESC(use_alt_lcd_levels,
1257                  "Use alternative interface for lcd_levels (needed for Lifebook s6410).");
1258 module_param(disable_brightness_adjust, uint, 0644);
1259 MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment .");
1260 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
1261 module_param_named(debug, dbg_level, uint, 0644);
1262 MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
1263 #endif
1264
1265 MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1266 MODULE_DESCRIPTION("Fujitsu laptop extras support");
1267 MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1268 MODULE_LICENSE("GPL");
1269
1270 MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
1271 MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1E6:*:cvrS6420:*");
1272 MODULE_ALIAS("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");