drivers/platform/x86/fujitsu-laptop.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*-*-linux-c-*-*/
   3
   4 /*
   5   Copyright (C) 2007,2008 Jonathan Woithe <[email protected]>
   6   Copyright (C) 2008 Peter Gruber <[email protected]>
   7   Copyright (C) 2008 Tony Vroon <[email protected]>
   8   Based on earlier work:
   9     Copyright (C) 2003 Shane Spencer <[email protected]>
  10     Adrian Yee <[email protected]>
  11
  12   Templated from msi-laptop.c and thinkpad_acpi.c which is copyright
  13   by its respective authors.
  14
  15  */
  16
  17 /*
  18  * fujitsu-laptop.c - Fujitsu laptop support, providing access to additional
  19  * features made available on a range of Fujitsu laptops including the
  20  * P2xxx/P5xxx/S6xxx/S7xxx series.
  21  *
  22  * This driver implements a vendor-specific backlight control interface for
  23  * Fujitsu laptops and provides support for hotkeys present on certain Fujitsu
  24  * laptops.
  25  *
  26  * This driver has been tested on a Fujitsu Lifebook S6410, S7020 and
  27  * P8010.  It should work on most P-series and S-series Lifebooks, but
  28  * YMMV.
  29  *
  30  * The module parameter use_alt_lcd_levels switches between different ACPI
  31  * brightness controls which are used by different Fujitsu laptops.  In most
  32  * cases the correct method is automatically detected. "use_alt_lcd_levels=1"
  33  * is applicable for a Fujitsu Lifebook S6410 if autodetection fails.
  34  *
  35  */
  36
  37 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  38
  39 #include <linux/module.h>
  40 #include <linux/kernel.h>
  41 #include <linux/init.h>
  42 #include <linux/acpi.h>
  43 #include <linux/bitops.h>
  44 #include <linux/dmi.h>
  45 #include <linux/backlight.h>
  46 #include <linux/fb.h>
  47 #include <linux/input.h>
  48 #include <linux/input/sparse-keymap.h>
  49 #include <linux/kfifo.h>
  50 #include <linux/leds.h>
  51 #include <linux/platform_device.h>
  52 #include <linux/power_supply.h>
  53 #include <acpi/battery.h>
  54 #include <acpi/video.h>
  55
  56 #define FUJITSU_DRIVER_VERSION          "0.6.0"
  57
  58 #define FUJITSU_LCD_N_LEVELS            8
  59
  60 #define ACPI_FUJITSU_CLASS              "fujitsu"
  61 #define ACPI_FUJITSU_BL_HID             "FUJ02B1"
  62 #define ACPI_FUJITSU_BL_DRIVER_NAME     "Fujitsu laptop FUJ02B1 ACPI brightness driver"
  63 #define ACPI_FUJITSU_BL_DEVICE_NAME     "Fujitsu FUJ02B1"
  64 #define ACPI_FUJITSU_LAPTOP_HID         "FUJ02E3"
  65 #define ACPI_FUJITSU_LAPTOP_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
  66 #define ACPI_FUJITSU_LAPTOP_DEVICE_NAME "Fujitsu FUJ02E3"
  67
  68 #define ACPI_FUJITSU_NOTIFY_CODE        0x80
  69
  70 /* FUNC interface - command values */
  71 #define FUNC_FLAGS                      BIT(12)
  72 #define FUNC_LEDS                       (BIT(12) | BIT(0))
  73 #define FUNC_BUTTONS                    (BIT(12) | BIT(1))
  74 #define FUNC_BACKLIGHT                  (BIT(12) | BIT(2))
  75
  76 /* FUNC interface - responses */
  77 #define UNSUPPORTED_CMD                 0x80000000
  78
  79 /* FUNC interface - status flags */
  80 #define FLAG_RFKILL                     BIT(5)
  81 #define FLAG_LID                        BIT(8)
  82 #define FLAG_DOCK                       BIT(9)
  83 #define FLAG_TOUCHPAD_TOGGLE            BIT(26)
  84 #define FLAG_MICMUTE                    BIT(29)
  85 #define FLAG_SOFTKEYS                   (FLAG_RFKILL | FLAG_TOUCHPAD_TOGGLE | FLAG_MICMUTE)
  86
  87 /* FUNC interface - LED control */
  88 #define FUNC_LED_OFF                    BIT(0)
  89 #define FUNC_LED_ON                     (BIT(0) | BIT(16) | BIT(17))
  90 #define LOGOLAMP_POWERON                BIT(13)
  91 #define LOGOLAMP_ALWAYS                 BIT(14)
  92 #define KEYBOARD_LAMPS                  BIT(8)
  93 #define RADIO_LED_ON                    BIT(5)
  94 #define ECO_LED                         BIT(16)
  95 #define ECO_LED_ON                      BIT(19)
  96
  97 /* FUNC interface - backlight power control */
  98 #define BACKLIGHT_PARAM_POWER           BIT(2)
  99 #define BACKLIGHT_OFF                   (BIT(0) | BIT(1))
 100 #define BACKLIGHT_ON                    0
 101
 102 /* FUNC interface - battery control interface */
 103 #define FUNC_S006_METHOD                0x1006
 104 #define CHARGE_CONTROL_RW               0x21
 105
 106 /* Scancodes read from the GIRB register */
 107 #define KEY1_CODE                       0x410
 108 #define KEY2_CODE                       0x411
 109 #define KEY3_CODE                       0x412
 110 #define KEY4_CODE                       0x413
 111 #define KEY5_CODE                       0x420
 112
 113 /* Hotkey ringbuffer limits */
 114 #define MAX_HOTKEY_RINGBUFFER_SIZE      100
 115 #define RINGBUFFERSIZE                  40
 116
 117 /* Module parameters */
 118 static int use_alt_lcd_levels = -1;
 119 static bool disable_brightness_adjust;
 120
 121 /* Device controlling the backlight and associated keys */
 122 struct fujitsu_bl {
 123         struct input_dev *input;
 124         char phys[32];
 125         struct backlight_device *bl_device;
 126         unsigned int max_brightness;
 127         unsigned int brightness_level;
 128 };
 129
 130 static struct fujitsu_bl *fujitsu_bl;
 131
 132 /* Device used to access hotkeys and other features on the laptop */
 133 struct fujitsu_laptop {
 134         struct input_dev *input;
 135         char phys[32];
 136         struct platform_device *pf_device;
 137         struct kfifo fifo;
 138         spinlock_t fifo_lock;
 139         int flags_supported;
 140         int flags_state;
 141         bool charge_control_supported;
 142 };
 143
 144 static struct acpi_device *fext;
 145
 146 /* Fujitsu ACPI interface function */
 147
 148 static int call_fext_func(struct acpi_device *device,
 149                           int func, int op, int feature, int state)
 150 {
 151         union acpi_object params[4] = {
 152                 { .integer.type = ACPI_TYPE_INTEGER, .integer.value = func },
 153                 { .integer.type = ACPI_TYPE_INTEGER, .integer.value = op },
 154                 { .integer.type = ACPI_TYPE_INTEGER, .integer.value = feature },
 155                 { .integer.type = ACPI_TYPE_INTEGER, .integer.value = state }
 156         };
 157         struct acpi_object_list arg_list = { 4, params };
 158         unsigned long long value;
 159         acpi_status status;
 160
 161         status = acpi_evaluate_integer(device->handle, "FUNC", &arg_list,
 162                                        &value);
 163         if (ACPI_FAILURE(status)) {
 164                 acpi_handle_err(device->handle, "Failed to evaluate FUNC\n");
 165                 return -ENODEV;
 166         }
 167
 168         acpi_handle_debug(device->handle,
 169                           "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
 170                           func, op, feature, state, (int)value);
 171         return value;
 172 }
 173
 174 /* Battery charge control code */
 175 static ssize_t charge_control_end_threshold_store(struct device *dev,
 176                                 struct device_attribute *attr,
 177                                 const char *buf, size_t count)
 178 {
 179         int cc_end_value, s006_cc_return;
 180         int value, ret;
 181
 182         ret = kstrtouint(buf, 10, &value);
 183         if (ret)
 184                 return ret;
 185
 186         if (value < 50 || value > 100)
 187                 return -EINVAL;
 188
 189         cc_end_value = value * 0x100 + 0x20;
 190         s006_cc_return = call_fext_func(fext, FUNC_S006_METHOD,
 191                                         CHARGE_CONTROL_RW, cc_end_value, 0x0);
 192         if (s006_cc_return < 0)
 193                 return s006_cc_return;
 194         /*
 195          * The S006 0x21 method returns 0x00 in case the provided value
 196          * is invalid.
 197          */
 198         if (s006_cc_return == 0x00)
 199                 return -EINVAL;
 200
 201         return count;
 202 }
 203
 204 static ssize_t charge_control_end_threshold_show(struct device *dev,
 205                                 struct device_attribute *attr,
 206                                 char *buf)
 207 {
 208         int status;
 209
 210         status = call_fext_func(fext, FUNC_S006_METHOD,
 211                                 CHARGE_CONTROL_RW, 0x21, 0x0);
 212         if (status < 0)
 213                 return status;
 214
 215         return sysfs_emit(buf, "%d\n", status);
 216 }
 217
 218 static DEVICE_ATTR_RW(charge_control_end_threshold);
 219
 220 /* ACPI battery hook */
 221 static int fujitsu_battery_add_hook(struct power_supply *battery,
 222                                struct acpi_battery_hook *hook)
 223 {
 224         return device_create_file(&battery->dev,
 225                                   &dev_attr_charge_control_end_threshold);
 226 }
 227
 228 static int fujitsu_battery_remove_hook(struct power_supply *battery,
 229                                   struct acpi_battery_hook *hook)
 230 {
 231         device_remove_file(&battery->dev,
 232                            &dev_attr_charge_control_end_threshold);
 233
 234         return 0;
 235 }
 236
 237 static struct acpi_battery_hook battery_hook = {
 238         .add_battery = fujitsu_battery_add_hook,
 239         .remove_battery = fujitsu_battery_remove_hook,
 240         .name = "Fujitsu Battery Extension",
 241 };
 242
 243 /*
 244  * These functions are intended to be called from acpi_fujitsu_laptop_add and
 245  * acpi_fujitsu_laptop_remove.
 246  */
 247 static int fujitsu_battery_charge_control_add(struct acpi_device *device)
 248 {
 249         struct fujitsu_laptop *priv = acpi_driver_data(device);
 250         int s006_cc_return;
 251
 252         priv->charge_control_supported = false;
 253         /*
 254          * Check if the S006 0x21 method exists by trying to get the current
 255          * battery charge limit.
 256          */
 257         s006_cc_return = call_fext_func(fext, FUNC_S006_METHOD,
 258                                         CHARGE_CONTROL_RW, 0x21, 0x0);
 259         if (s006_cc_return < 0)
 260                 return s006_cc_return;
 261         if (s006_cc_return == UNSUPPORTED_CMD)
 262                 return -ENODEV;
 263
 264         priv->charge_control_supported = true;
 265         battery_hook_register(&battery_hook);
 266
 267         return 0;
 268 }
 269
 270 static void fujitsu_battery_charge_control_remove(struct acpi_device *device)
 271 {
 272         struct fujitsu_laptop *priv = acpi_driver_data(device);
 273
 274         if (priv->charge_control_supported)
 275                 battery_hook_unregister(&battery_hook);
 276 }
 277
 278 /* Hardware access for LCD brightness control */
 279
 280 static int set_lcd_level(struct acpi_device *device, int level)
 281 {
 282         struct fujitsu_bl *priv = acpi_driver_data(device);
 283         acpi_status status;
 284         char *method;
 285
 286         switch (use_alt_lcd_levels) {
 287         case -1:
 288                 if (acpi_has_method(device->handle, "SBL2"))
 289                         method = "SBL2";
 290                 else
 291                         method = "SBLL";
 292                 break;
 293         case 1:
 294                 method = "SBL2";
 295                 break;
 296         default:
 297                 method = "SBLL";
 298                 break;
 299         }
 300
 301         acpi_handle_debug(device->handle, "set lcd level via %s [%d]\n", method,
 302                           level);
 303
 304         if (level < 0 || level >= priv->max_brightness)
 305                 return -EINVAL;
 306
 307         status = acpi_execute_simple_method(device->handle, method, level);
 308         if (ACPI_FAILURE(status)) {
 309                 acpi_handle_err(device->handle, "Failed to evaluate %s\n",
 310                                 method);
 311                 return -ENODEV;
 312         }
 313
 314         priv->brightness_level = level;
 315
 316         return 0;
 317 }
 318
 319 static int get_lcd_level(struct acpi_device *device)
 320 {
 321         struct fujitsu_bl *priv = acpi_driver_data(device);
 322         unsigned long long state = 0;
 323         acpi_status status = AE_OK;
 324
 325         acpi_handle_debug(device->handle, "get lcd level via GBLL\n");
 326
 327         status = acpi_evaluate_integer(device->handle, "GBLL", NULL, &state);
 328         if (ACPI_FAILURE(status))
 329                 return 0;
 330
 331         priv->brightness_level = state & 0x0fffffff;
 332
 333         return priv->brightness_level;
 334 }
 335
 336 static int get_max_brightness(struct acpi_device *device)
 337 {
 338         struct fujitsu_bl *priv = acpi_driver_data(device);
 339         unsigned long long state = 0;
 340         acpi_status status = AE_OK;
 341
 342         acpi_handle_debug(device->handle, "get max lcd level via RBLL\n");
 343
 344         status = acpi_evaluate_integer(device->handle, "RBLL", NULL, &state);
 345         if (ACPI_FAILURE(status))
 346                 return -1;
 347
 348         priv->max_brightness = state;
 349
 350         return priv->max_brightness;
 351 }
 352
 353 /* Backlight device stuff */
 354
 355 static int bl_get_brightness(struct backlight_device *b)
 356 {
 357         struct acpi_device *device = bl_get_data(b);
 358
 359         return b->props.power == FB_BLANK_POWERDOWN ? 0 : get_lcd_level(device);
 360 }
 361
 362 static int bl_update_status(struct backlight_device *b)
 363 {
 364         struct acpi_device *device = bl_get_data(b);
 365
 366         if (fext) {
 367                 if (b->props.power == FB_BLANK_POWERDOWN)
 368                         call_fext_func(fext, FUNC_BACKLIGHT, 0x1,
 369                                        BACKLIGHT_PARAM_POWER, BACKLIGHT_OFF);
 370                 else
 371                         call_fext_func(fext, FUNC_BACKLIGHT, 0x1,
 372                                        BACKLIGHT_PARAM_POWER, BACKLIGHT_ON);
 373         }
 374
 375         return set_lcd_level(device, b->props.brightness);
 376 }
 377
 378 static const struct backlight_ops fujitsu_bl_ops = {
 379         .get_brightness = bl_get_brightness,
 380         .update_status = bl_update_status,
 381 };
 382
 383 static ssize_t lid_show(struct device *dev, struct device_attribute *attr,
 384                         char *buf)
 385 {
 386         struct fujitsu_laptop *priv = dev_get_drvdata(dev);
 387
 388         if (!(priv->flags_supported & FLAG_LID))
 389                 return sysfs_emit(buf, "unknown\n");
 390         if (priv->flags_state & FLAG_LID)
 391                 return sysfs_emit(buf, "open\n");
 392         else
 393                 return sysfs_emit(buf, "closed\n");
 394 }
 395
 396 static ssize_t dock_show(struct device *dev, struct device_attribute *attr,
 397                          char *buf)
 398 {
 399         struct fujitsu_laptop *priv = dev_get_drvdata(dev);
 400
 401         if (!(priv->flags_supported & FLAG_DOCK))
 402                 return sysfs_emit(buf, "unknown\n");
 403         if (priv->flags_state & FLAG_DOCK)
 404                 return sysfs_emit(buf, "docked\n");
 405         else
 406                 return sysfs_emit(buf, "undocked\n");
 407 }
 408
 409 static ssize_t radios_show(struct device *dev, struct device_attribute *attr,
 410                            char *buf)
 411 {
 412         struct fujitsu_laptop *priv = dev_get_drvdata(dev);
 413
 414         if (!(priv->flags_supported & FLAG_RFKILL))
 415                 return sysfs_emit(buf, "unknown\n");
 416         if (priv->flags_state & FLAG_RFKILL)
 417                 return sysfs_emit(buf, "on\n");
 418         else
 419                 return sysfs_emit(buf, "killed\n");
 420 }
 421
 422 static DEVICE_ATTR_RO(lid);
 423 static DEVICE_ATTR_RO(dock);
 424 static DEVICE_ATTR_RO(radios);
 425
 426 static struct attribute *fujitsu_pf_attributes[] = {
 427         &dev_attr_lid.attr,
 428         &dev_attr_dock.attr,
 429         &dev_attr_radios.attr,
 430         NULL
 431 };
 432
 433 static const struct attribute_group fujitsu_pf_attribute_group = {
 434         .attrs = fujitsu_pf_attributes
 435 };
 436
 437 static struct platform_driver fujitsu_pf_driver = {
 438         .driver = {
 439                    .name = "fujitsu-laptop",
 440                    }
 441 };
 442
 443 /* ACPI device for LCD brightness control */
 444
 445 static const struct key_entry keymap_backlight[] = {
 446         { KE_KEY, true, { KEY_BRIGHTNESSUP } },
 447         { KE_KEY, false, { KEY_BRIGHTNESSDOWN } },
 448         { KE_END, 0 }
 449 };
 450
 451 static int acpi_fujitsu_bl_input_setup(struct acpi_device *device)
 452 {
 453         struct fujitsu_bl *priv = acpi_driver_data(device);
 454         int ret;
 455
 456         priv->input = devm_input_allocate_device(&device->dev);
 457         if (!priv->input)
 458                 return -ENOMEM;
 459
 460         snprintf(priv->phys, sizeof(priv->phys), "%s/video/input0",
 461                  acpi_device_hid(device));
 462
 463         priv->input->name = acpi_device_name(device);
 464         priv->input->phys = priv->phys;
 465         priv->input->id.bustype = BUS_HOST;
 466         priv->input->id.product = 0x06;
 467
 468         ret = sparse_keymap_setup(priv->input, keymap_backlight, NULL);
 469         if (ret)
 470                 return ret;
 471
 472         return input_register_device(priv->input);
 473 }
 474
 475 static int fujitsu_backlight_register(struct acpi_device *device)
 476 {
 477         struct fujitsu_bl *priv = acpi_driver_data(device);
 478         const struct backlight_properties props = {
 479                 .brightness = priv->brightness_level,
 480                 .max_brightness = priv->max_brightness - 1,
 481                 .type = BACKLIGHT_PLATFORM
 482         };
 483         struct backlight_device *bd;
 484
 485         bd = devm_backlight_device_register(&device->dev, "fujitsu-laptop",
 486                                             &device->dev, device,
 487                                             &fujitsu_bl_ops, &props);
 488         if (IS_ERR(bd))
 489                 return PTR_ERR(bd);
 490
 491         priv->bl_device = bd;
 492
 493         return 0;
 494 }
 495
 496 static int acpi_fujitsu_bl_add(struct acpi_device *device)
 497 {
 498         struct fujitsu_bl *priv;
 499         int ret;
 500
 501         if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
 502                 return -ENODEV;
 503
 504         priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL);
 505         if (!priv)
 506                 return -ENOMEM;
 507
 508         fujitsu_bl = priv;
 509         strcpy(acpi_device_name(device), ACPI_FUJITSU_BL_DEVICE_NAME);
 510         strcpy(acpi_device_class(device), ACPI_FUJITSU_CLASS);
 511         device->driver_data = priv;
 512
 513         pr_info("ACPI: %s [%s]\n",
 514                 acpi_device_name(device), acpi_device_bid(device));
 515
 516         if (get_max_brightness(device) <= 0)
 517                 priv->max_brightness = FUJITSU_LCD_N_LEVELS;
 518         get_lcd_level(device);
 519
 520         ret = acpi_fujitsu_bl_input_setup(device);
 521         if (ret)
 522                 return ret;
 523
 524         return fujitsu_backlight_register(device);
 525 }
 526
 527 /* Brightness notify */
 528
 529 static void acpi_fujitsu_bl_notify(struct acpi_device *device, u32 event)
 530 {
 531         struct fujitsu_bl *priv = acpi_driver_data(device);
 532         int oldb, newb;
 533
 534         if (event != ACPI_FUJITSU_NOTIFY_CODE) {
 535                 acpi_handle_info(device->handle, "unsupported event [0x%x]\n",
 536                                  event);
 537                 sparse_keymap_report_event(priv->input, -1, 1, true);
 538                 return;
 539         }
 540
 541         oldb = priv->brightness_level;
 542         get_lcd_level(device);
 543         newb = priv->brightness_level;
 544
 545         acpi_handle_debug(device->handle,
 546                           "brightness button event [%i -> %i]\n", oldb, newb);
 547
 548         if (oldb == newb)
 549                 return;
 550
 551         if (!disable_brightness_adjust)
 552                 set_lcd_level(device, newb);
 553
 554         sparse_keymap_report_event(priv->input, oldb < newb, 1, true);
 555 }
 556
 557 /* ACPI device for hotkey handling */
 558
 559 static const struct key_entry keymap_default[] = {
 560         { KE_KEY, KEY1_CODE,            { KEY_PROG1 } },
 561         { KE_KEY, KEY2_CODE,            { KEY_PROG2 } },
 562         { KE_KEY, KEY3_CODE,            { KEY_PROG3 } },
 563         { KE_KEY, KEY4_CODE,            { KEY_PROG4 } },
 564         { KE_KEY, KEY5_CODE,            { KEY_RFKILL } },
 565         /* Soft keys read from status flags */
 566         { KE_KEY, FLAG_RFKILL,          { KEY_RFKILL } },
 567         { KE_KEY, FLAG_TOUCHPAD_TOGGLE, { KEY_TOUCHPAD_TOGGLE } },
 568         { KE_KEY, FLAG_MICMUTE,         { KEY_MICMUTE } },
 569         { KE_END, 0 }
 570 };
 571
 572 static const struct key_entry keymap_s64x0[] = {
 573         { KE_KEY, KEY1_CODE, { KEY_SCREENLOCK } },      /* "Lock" */
 574         { KE_KEY, KEY2_CODE, { KEY_HELP } },            /* "Mobility Center */
 575         { KE_KEY, KEY3_CODE, { KEY_PROG3 } },
 576         { KE_KEY, KEY4_CODE, { KEY_PROG4 } },
 577         { KE_END, 0 }
 578 };
 579
 580 static const struct key_entry keymap_p8010[] = {
 581         { KE_KEY, KEY1_CODE, { KEY_HELP } },            /* "Support" */
 582         { KE_KEY, KEY2_CODE, { KEY_PROG2 } },
 583         { KE_KEY, KEY3_CODE, { KEY_SWITCHVIDEOMODE } }, /* "Presentation" */
 584         { KE_KEY, KEY4_CODE, { KEY_WWW } },             /* "WWW" */
 585         { KE_END, 0 }
 586 };
 587
 588 static const struct key_entry *keymap = keymap_default;
 589
 590 static int fujitsu_laptop_dmi_keymap_override(const struct dmi_system_id *id)
 591 {
 592         pr_info("Identified laptop model '%s'\n", id->ident);
 593         keymap = id->driver_data;
 594         return 1;
 595 }
 596
 597 static const struct dmi_system_id fujitsu_laptop_dmi_table[] = {
 598         {
 599                 .callback = fujitsu_laptop_dmi_keymap_override,
 600                 .ident = "Fujitsu Siemens S6410",
 601                 .matches = {
 602                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 603                         DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
 604                 },
 605                 .driver_data = (void *)keymap_s64x0
 606         },
 607         {
 608                 .callback = fujitsu_laptop_dmi_keymap_override,
 609                 .ident = "Fujitsu Siemens S6420",
 610                 .matches = {
 611                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 612                         DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
 613                 },
 614                 .driver_data = (void *)keymap_s64x0
 615         },
 616         {
 617                 .callback = fujitsu_laptop_dmi_keymap_override,
 618                 .ident = "Fujitsu LifeBook P8010",
 619                 .matches = {
 620                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
 621                         DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
 622                 },
 623                 .driver_data = (void *)keymap_p8010
 624         },
 625         {}
 626 };
 627
 628 static int acpi_fujitsu_laptop_input_setup(struct acpi_device *device)
 629 {
 630         struct fujitsu_laptop *priv = acpi_driver_data(device);
 631         int ret;
 632
 633         priv->input = devm_input_allocate_device(&device->dev);
 634         if (!priv->input)
 635                 return -ENOMEM;
 636
 637         snprintf(priv->phys, sizeof(priv->phys), "%s/input0",
 638                  acpi_device_hid(device));
 639
 640         priv->input->name = acpi_device_name(device);
 641         priv->input->phys = priv->phys;
 642         priv->input->id.bustype = BUS_HOST;
 643
 644         dmi_check_system(fujitsu_laptop_dmi_table);
 645         ret = sparse_keymap_setup(priv->input, keymap, NULL);
 646         if (ret)
 647                 return ret;
 648
 649         return input_register_device(priv->input);
 650 }
 651
 652 static int fujitsu_laptop_platform_add(struct acpi_device *device)
 653 {
 654         struct fujitsu_laptop *priv = acpi_driver_data(device);
 655         int ret;
 656
 657         priv->pf_device = platform_device_alloc("fujitsu-laptop", PLATFORM_DEVID_NONE);
 658         if (!priv->pf_device)
 659                 return -ENOMEM;
 660
 661         platform_set_drvdata(priv->pf_device, priv);
 662
 663         ret = platform_device_add(priv->pf_device);
 664         if (ret)
 665                 goto err_put_platform_device;
 666
 667         ret = sysfs_create_group(&priv->pf_device->dev.kobj,
 668                                  &fujitsu_pf_attribute_group);
 669         if (ret)
 670                 goto err_del_platform_device;
 671
 672         return 0;
 673
 674 err_del_platform_device:
 675         platform_device_del(priv->pf_device);
 676 err_put_platform_device:
 677         platform_device_put(priv->pf_device);
 678
 679         return ret;
 680 }
 681
 682 static void fujitsu_laptop_platform_remove(struct acpi_device *device)
 683 {
 684         struct fujitsu_laptop *priv = acpi_driver_data(device);
 685
 686         sysfs_remove_group(&priv->pf_device->dev.kobj,
 687                            &fujitsu_pf_attribute_group);
 688         platform_device_unregister(priv->pf_device);
 689 }
 690
 691 static int logolamp_set(struct led_classdev *cdev,
 692                         enum led_brightness brightness)
 693 {
 694         struct acpi_device *device = to_acpi_device(cdev->dev->parent);
 695         int poweron = FUNC_LED_ON, always = FUNC_LED_ON;
 696         int ret;
 697
 698         if (brightness < LED_HALF)
 699                 poweron = FUNC_LED_OFF;
 700
 701         if (brightness < LED_FULL)
 702                 always = FUNC_LED_OFF;
 703
 704         ret = call_fext_func(device, FUNC_LEDS, 0x1, LOGOLAMP_POWERON, poweron);
 705         if (ret < 0)
 706                 return ret;
 707
 708         return call_fext_func(device, FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, always);
 709 }
 710
 711 static enum led_brightness logolamp_get(struct led_classdev *cdev)
 712 {
 713         struct acpi_device *device = to_acpi_device(cdev->dev->parent);
 714         int ret;
 715
 716         ret = call_fext_func(device, FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
 717         if (ret == FUNC_LED_ON)
 718                 return LED_FULL;
 719
 720         ret = call_fext_func(device, FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
 721         if (ret == FUNC_LED_ON)
 722                 return LED_HALF;
 723
 724         return LED_OFF;
 725 }
 726
 727 static int kblamps_set(struct led_classdev *cdev,
 728                        enum led_brightness brightness)
 729 {
 730         struct acpi_device *device = to_acpi_device(cdev->dev->parent);
 731
 732         if (brightness >= LED_FULL)
 733                 return call_fext_func(device, FUNC_LEDS, 0x1, KEYBOARD_LAMPS,
 734                                       FUNC_LED_ON);
 735         else
 736                 return call_fext_func(device, FUNC_LEDS, 0x1, KEYBOARD_LAMPS,
 737                                       FUNC_LED_OFF);
 738 }
 739
 740 static enum led_brightness kblamps_get(struct led_classdev *cdev)
 741 {
 742         struct acpi_device *device = to_acpi_device(cdev->dev->parent);
 743         enum led_brightness brightness = LED_OFF;
 744
 745         if (call_fext_func(device,
 746                            FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
 747                 brightness = LED_FULL;
 748
 749         return brightness;
 750 }
 751
 752 static int radio_led_set(struct led_classdev *cdev,
 753                          enum led_brightness brightness)
 754 {
 755         struct acpi_device *device = to_acpi_device(cdev->dev->parent);
 756
 757         if (brightness >= LED_FULL)
 758                 return call_fext_func(device, FUNC_FLAGS, 0x5, RADIO_LED_ON,
 759                                       RADIO_LED_ON);
 760         else
 761                 return call_fext_func(device, FUNC_FLAGS, 0x5, RADIO_LED_ON,
 762                                       0x0);
 763 }
 764
 765 static enum led_brightness radio_led_get(struct led_classdev *cdev)
 766 {
 767         struct acpi_device *device = to_acpi_device(cdev->dev->parent);
 768         enum led_brightness brightness = LED_OFF;
 769
 770         if (call_fext_func(device, FUNC_FLAGS, 0x4, 0x0, 0x0) & RADIO_LED_ON)
 771                 brightness = LED_FULL;
 772
 773         return brightness;
 774 }
 775
 776 static int eco_led_set(struct led_classdev *cdev,
 777                        enum led_brightness brightness)
 778 {
 779         struct acpi_device *device = to_acpi_device(cdev->dev->parent);
 780         int curr;
 781
 782         curr = call_fext_func(device, FUNC_LEDS, 0x2, ECO_LED, 0x0);
 783         if (brightness >= LED_FULL)
 784                 return call_fext_func(device, FUNC_LEDS, 0x1, ECO_LED,
 785                                       curr | ECO_LED_ON);
 786         else
 787                 return call_fext_func(device, FUNC_LEDS, 0x1, ECO_LED,
 788                                       curr & ~ECO_LED_ON);
 789 }
 790
 791 static enum led_brightness eco_led_get(struct led_classdev *cdev)
 792 {
 793         struct acpi_device *device = to_acpi_device(cdev->dev->parent);
 794         enum led_brightness brightness = LED_OFF;
 795
 796         if (call_fext_func(device, FUNC_LEDS, 0x2, ECO_LED, 0x0) & ECO_LED_ON)
 797                 brightness = LED_FULL;
 798
 799         return brightness;
 800 }
 801
 802 static int acpi_fujitsu_laptop_leds_register(struct acpi_device *device)
 803 {
 804         struct fujitsu_laptop *priv = acpi_driver_data(device);
 805         struct led_classdev *led;
 806         int ret;
 807
 808         if (call_fext_func(device,
 809                            FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
 810                 led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);
 811                 if (!led)
 812                         return -ENOMEM;
 813
 814                 led->name = "fujitsu::logolamp";
 815                 led->brightness_set_blocking = logolamp_set;
 816                 led->brightness_get = logolamp_get;
 817                 ret = devm_led_classdev_register(&device->dev, led);
 818                 if (ret)
 819                         return ret;
 820         }
 821
 822         if ((call_fext_func(device,
 823                             FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
 824             (call_fext_func(device, FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
 825                 led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);
 826                 if (!led)
 827                         return -ENOMEM;
 828
 829                 led->name = "fujitsu::kblamps";
 830                 led->brightness_set_blocking = kblamps_set;
 831                 led->brightness_get = kblamps_get;
 832                 ret = devm_led_classdev_register(&device->dev, led);
 833                 if (ret)
 834                         return ret;
 835         }
 836
 837         /*
 838          * Some Fujitsu laptops have a radio toggle button in place of a slide
 839          * switch and all such machines appear to also have an RF LED.  Based on
 840          * comparing DSDT tables of four Fujitsu Lifebook models (E744, E751,
 841          * S7110, S8420; the first one has a radio toggle button, the other
 842          * three have slide switches), bit 17 of flags_supported (the value
 843          * returned by method S000 of ACPI device FUJ02E3) seems to indicate
 844          * whether given model has a radio toggle button.
 845          */
 846         if (priv->flags_supported & BIT(17)) {
 847                 led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);
 848                 if (!led)
 849                         return -ENOMEM;
 850
 851                 led->name = "fujitsu::radio_led";
 852                 led->brightness_set_blocking = radio_led_set;
 853                 led->brightness_get = radio_led_get;
 854                 led->default_trigger = "rfkill-any";
 855                 ret = devm_led_classdev_register(&device->dev, led);
 856                 if (ret)
 857                         return ret;
 858         }
 859
 860         /* Support for eco led is not always signaled in bit corresponding
 861          * to the bit used to control the led. According to the DSDT table,
 862          * bit 14 seems to indicate presence of said led as well.
 863          * Confirm by testing the status.
 864          */
 865         if ((call_fext_func(device, FUNC_LEDS, 0x0, 0x0, 0x0) & BIT(14)) &&
 866             (call_fext_func(device,
 867                             FUNC_LEDS, 0x2, ECO_LED, 0x0) != UNSUPPORTED_CMD)) {
 868                 led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);
 869                 if (!led)
 870                         return -ENOMEM;
 871
 872                 led->name = "fujitsu::eco_led";
 873                 led->brightness_set_blocking = eco_led_set;
 874                 led->brightness_get = eco_led_get;
 875                 ret = devm_led_classdev_register(&device->dev, led);
 876                 if (ret)
 877                         return ret;
 878         }
 879
 880         return 0;
 881 }
 882
 883 static int acpi_fujitsu_laptop_add(struct acpi_device *device)
 884 {
 885         struct fujitsu_laptop *priv;
 886         int ret, i = 0;
 887
 888         priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL);
 889         if (!priv)
 890                 return -ENOMEM;
 891
 892         WARN_ONCE(fext, "More than one FUJ02E3 ACPI device was found.  Driver may not work as intended.");
 893         fext = device;
 894
 895         strcpy(acpi_device_name(device), ACPI_FUJITSU_LAPTOP_DEVICE_NAME);
 896         strcpy(acpi_device_class(device), ACPI_FUJITSU_CLASS);
 897         device->driver_data = priv;
 898
 899         /* kfifo */
 900         spin_lock_init(&priv->fifo_lock);
 901         ret = kfifo_alloc(&priv->fifo, RINGBUFFERSIZE * sizeof(int),
 902                           GFP_KERNEL);
 903         if (ret)
 904                 return ret;
 905
 906         pr_info("ACPI: %s [%s]\n",
 907                 acpi_device_name(device), acpi_device_bid(device));
 908
 909         while (call_fext_func(device, FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0 &&
 910                i++ < MAX_HOTKEY_RINGBUFFER_SIZE)
 911                 ; /* No action, result is discarded */
 912         acpi_handle_debug(device->handle, "Discarded %i ringbuffer entries\n",
 913                           i);
 914
 915         priv->flags_supported = call_fext_func(device, FUNC_FLAGS, 0x0, 0x0,
 916                                                0x0);
 917
 918         /* Make sure our bitmask of supported functions is cleared if the
 919            RFKILL function block is not implemented, like on the S7020. */
 920         if (priv->flags_supported == UNSUPPORTED_CMD)
 921                 priv->flags_supported = 0;
 922
 923         if (priv->flags_supported)
 924                 priv->flags_state = call_fext_func(device, FUNC_FLAGS, 0x4, 0x0,
 925                                                    0x0);
 926
 927         /* Suspect this is a keymap of the application panel, print it */
 928         acpi_handle_info(device->handle, "BTNI: [0x%x]\n",
 929                          call_fext_func(device, FUNC_BUTTONS, 0x0, 0x0, 0x0));
 930
 931         /* Sync backlight power status */
 932         if (fujitsu_bl && fujitsu_bl->bl_device &&
 933             acpi_video_get_backlight_type() == acpi_backlight_vendor) {
 934                 if (call_fext_func(fext, FUNC_BACKLIGHT, 0x2,
 935                                    BACKLIGHT_PARAM_POWER, 0x0) == BACKLIGHT_OFF)
 936                         fujitsu_bl->bl_device->props.power = FB_BLANK_POWERDOWN;
 937                 else
 938                         fujitsu_bl->bl_device->props.power = FB_BLANK_UNBLANK;
 939         }
 940
 941         ret = acpi_fujitsu_laptop_input_setup(device);
 942         if (ret)
 943                 goto err_free_fifo;
 944
 945         ret = acpi_fujitsu_laptop_leds_register(device);
 946         if (ret)
 947                 goto err_free_fifo;
 948
 949         ret = fujitsu_laptop_platform_add(device);
 950         if (ret)
 951                 goto err_free_fifo;
 952
 953         ret = fujitsu_battery_charge_control_add(device);
 954         if (ret < 0)
 955                 pr_warn("Unable to register battery charge control: %d\n", ret);
 956
 957         return 0;
 958
 959 err_free_fifo:
 960         kfifo_free(&priv->fifo);
 961
 962         return ret;
 963 }
 964
 965 static void acpi_fujitsu_laptop_remove(struct acpi_device *device)
 966 {
 967         struct fujitsu_laptop *priv = acpi_driver_data(device);
 968
 969         fujitsu_battery_charge_control_remove(device);
 970
 971         fujitsu_laptop_platform_remove(device);
 972
 973         kfifo_free(&priv->fifo);
 974 }
 975
 976 static void acpi_fujitsu_laptop_press(struct acpi_device *device, int scancode)
 977 {
 978         struct fujitsu_laptop *priv = acpi_driver_data(device);
 979         int ret;
 980
 981         ret = kfifo_in_locked(&priv->fifo, (unsigned char *)&scancode,
 982                               sizeof(scancode), &priv->fifo_lock);
 983         if (ret != sizeof(scancode)) {
 984                 dev_info(&priv->input->dev, "Could not push scancode [0x%x]\n",
 985                          scancode);
 986                 return;
 987         }
 988         sparse_keymap_report_event(priv->input, scancode, 1, false);
 989         dev_dbg(&priv->input->dev, "Push scancode into ringbuffer [0x%x]\n",
 990                 scancode);
 991 }
 992
 993 static void acpi_fujitsu_laptop_release(struct acpi_device *device)
 994 {
 995         struct fujitsu_laptop *priv = acpi_driver_data(device);
 996         int scancode, ret;
 997
 998         while (true) {
 999                 ret = kfifo_out_locked(&priv->fifo, (unsigned char *)&scancode,
1000                                        sizeof(scancode), &priv->fifo_lock);
1001                 if (ret != sizeof(scancode))
1002                         return;
1003                 sparse_keymap_report_event(priv->input, scancode, 0, false);
1004                 dev_dbg(&priv->input->dev,
1005                         "Pop scancode from ringbuffer [0x%x]\n", scancode);
1006         }
1007 }
1008
1009 static void acpi_fujitsu_laptop_notify(struct acpi_device *device, u32 event)
1010 {
1011         struct fujitsu_laptop *priv = acpi_driver_data(device);
1012         unsigned long flags;
1013         int scancode, i = 0;
1014         unsigned int irb;
1015
1016         if (event != ACPI_FUJITSU_NOTIFY_CODE) {
1017                 acpi_handle_info(device->handle, "Unsupported event [0x%x]\n",
1018                                  event);
1019                 sparse_keymap_report_event(priv->input, -1, 1, true);
1020                 return;
1021         }
1022
1023         if (priv->flags_supported)
1024                 priv->flags_state = call_fext_func(device, FUNC_FLAGS, 0x4, 0x0,
1025                                                    0x0);
1026
1027         while ((irb = call_fext_func(device,
1028                                      FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0 &&
1029                i++ < MAX_HOTKEY_RINGBUFFER_SIZE) {
1030                 scancode = irb & 0x4ff;
1031                 if (sparse_keymap_entry_from_scancode(priv->input, scancode))
1032                         acpi_fujitsu_laptop_press(device, scancode);
1033                 else if (scancode == 0)
1034                         acpi_fujitsu_laptop_release(device);
1035                 else
1036                         acpi_handle_info(device->handle,
1037                                          "Unknown GIRB result [%x]\n", irb);
1038         }
1039
1040         /*
1041          * First seen on the Skylake-based Lifebook E736/E746/E756), the
1042          * touchpad toggle hotkey (Fn+F4) is handled in software. Other models
1043          * have since added additional "soft keys". These are reported in the
1044          * status flags queried using FUNC_FLAGS.
1045          */
1046         if (priv->flags_supported & (FLAG_SOFTKEYS)) {
1047                 flags = call_fext_func(device, FUNC_FLAGS, 0x1, 0x0, 0x0);
1048                 flags &= (FLAG_SOFTKEYS);
1049                 for_each_set_bit(i, &flags, BITS_PER_LONG)
1050                         sparse_keymap_report_event(priv->input, BIT(i), 1, true);
1051         }
1052 }
1053
1054 /* Initialization */
1055
1056 static const struct acpi_device_id fujitsu_bl_device_ids[] = {
1057         {ACPI_FUJITSU_BL_HID, 0},
1058         {"", 0},
1059 };
1060
1061 static struct acpi_driver acpi_fujitsu_bl_driver = {
1062         .name = ACPI_FUJITSU_BL_DRIVER_NAME,
1063         .class = ACPI_FUJITSU_CLASS,
1064         .ids = fujitsu_bl_device_ids,
1065         .ops = {
1066                 .add = acpi_fujitsu_bl_add,
1067                 .notify = acpi_fujitsu_bl_notify,
1068                 },
1069 };
1070
1071 static const struct acpi_device_id fujitsu_laptop_device_ids[] = {
1072         {ACPI_FUJITSU_LAPTOP_HID, 0},
1073         {"", 0},
1074 };
1075
1076 static struct acpi_driver acpi_fujitsu_laptop_driver = {
1077         .name = ACPI_FUJITSU_LAPTOP_DRIVER_NAME,
1078         .class = ACPI_FUJITSU_CLASS,
1079         .ids = fujitsu_laptop_device_ids,
1080         .ops = {
1081                 .add = acpi_fujitsu_laptop_add,
1082                 .remove = acpi_fujitsu_laptop_remove,
1083                 .notify = acpi_fujitsu_laptop_notify,
1084                 },
1085 };
1086
1087 static const struct acpi_device_id fujitsu_ids[] __used = {
1088         {ACPI_FUJITSU_BL_HID, 0},
1089         {ACPI_FUJITSU_LAPTOP_HID, 0},
1090         {"", 0}
1091 };
1092 MODULE_DEVICE_TABLE(acpi, fujitsu_ids);
1093
1094 static int __init fujitsu_init(void)
1095 {
1096         int ret;
1097
1098         ret = acpi_bus_register_driver(&acpi_fujitsu_bl_driver);
1099         if (ret)
1100                 return ret;
1101
1102         /* Register platform stuff */
1103
1104         ret = platform_driver_register(&fujitsu_pf_driver);
1105         if (ret)
1106                 goto err_unregister_acpi;
1107
1108         /* Register laptop driver */
1109
1110         ret = acpi_bus_register_driver(&acpi_fujitsu_laptop_driver);
1111         if (ret)
1112                 goto err_unregister_platform_driver;
1113
1114         pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n");
1115
1116         return 0;
1117
1118 err_unregister_platform_driver:
1119         platform_driver_unregister(&fujitsu_pf_driver);
1120 err_unregister_acpi:
1121         acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver);
1122
1123         return ret;
1124 }
1125
1126 static void __exit fujitsu_cleanup(void)
1127 {
1128         acpi_bus_unregister_driver(&acpi_fujitsu_laptop_driver);
1129
1130         platform_driver_unregister(&fujitsu_pf_driver);
1131
1132         acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver);
1133
1134         pr_info("driver unloaded\n");
1135 }
1136
1137 module_init(fujitsu_init);
1138 module_exit(fujitsu_cleanup);
1139
1140 module_param(use_alt_lcd_levels, int, 0644);
1141 MODULE_PARM_DESC(use_alt_lcd_levels, "Interface used for setting LCD brightness level (-1 = auto, 0 = force SBLL, 1 = force SBL2)");
1142 module_param(disable_brightness_adjust, bool, 0644);
1143 MODULE_PARM_DESC(disable_brightness_adjust, "Disable LCD brightness adjustment");
1144
1145 MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1146 MODULE_DESCRIPTION("Fujitsu laptop extras support");
1147 MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1148 MODULE_LICENSE("GPL");