drivers/platform/x86/toshiba_acpi.c

   1 /*
   2  *  toshiba_acpi.c - Toshiba Laptop ACPI Extras
   3  *
   4  *
   5  *  Copyright (C) 2002-2004 John Belmonte
   6  *  Copyright (C) 2008 Philip Langdale
   7  *  Copyright (C) 2010 Pierre Ducroquet
   8  *  Copyright (C) 2014 Azael Avalos
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  *
  24  *
  25  *  The devolpment page for this driver is located at
  26  *  http://memebeam.org/toys/ToshibaAcpiDriver.
  27  *
  28  *  Credits:
  29  *      Jonathan A. Buzzard - Toshiba HCI info, and critical tips on reverse
  30  *              engineering the Windows drivers
  31  *      Yasushi Nagato - changes for linux kernel 2.4 -> 2.5
  32  *      Rob Miller - TV out and hotkeys help
  33  *
  34  *
  35  *  TODO
  36  *
  37  */
  38
  39 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  40
  41 #define TOSHIBA_ACPI_VERSION    "0.20"
  42 #define PROC_INTERFACE_VERSION  1
  43
  44 #include <linux/kernel.h>
  45 #include <linux/module.h>
  46 #include <linux/init.h>
  47 #include <linux/types.h>
  48 #include <linux/proc_fs.h>
  49 #include <linux/seq_file.h>
  50 #include <linux/backlight.h>
  51 #include <linux/rfkill.h>
  52 #include <linux/input.h>
  53 #include <linux/input/sparse-keymap.h>
  54 #include <linux/leds.h>
  55 #include <linux/slab.h>
  56 #include <linux/workqueue.h>
  57 #include <linux/i8042.h>
  58 #include <linux/acpi.h>
  59 #include <linux/dmi.h>
  60 #include <asm/uaccess.h>
  61
  62 MODULE_AUTHOR("John Belmonte");
  63 MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
  64 MODULE_LICENSE("GPL");
  65
  66 #define TOSHIBA_WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
  67
  68 /* Scan code for Fn key on TOS1900 models */
  69 #define TOS1900_FN_SCAN         0x6e
  70
  71 /* Toshiba ACPI method paths */
  72 #define METHOD_VIDEO_OUT        "\\_SB_.VALX.DSSX"
  73
  74 /* The Toshiba configuration interface is composed of the HCI and the SCI,
  75  * which are defined as follows:
  76  *
  77  * HCI is Toshiba's "Hardware Control Interface" which is supposed to
  78  * be uniform across all their models.  Ideally we would just call
  79  * dedicated ACPI methods instead of using this primitive interface.
  80  * However the ACPI methods seem to be incomplete in some areas (for
  81  * example they allow setting, but not reading, the LCD brightness value),
  82  * so this is still useful.
  83  *
  84  * SCI stands for "System Configuration Interface" which aim is to
  85  * conceal differences in hardware between different models.
  86  */
  87
  88 #define TCI_WORDS                       6
  89
  90 /* operations */
  91 #define HCI_SET                         0xff00
  92 #define HCI_GET                         0xfe00
  93 #define SCI_OPEN                        0xf100
  94 #define SCI_CLOSE                       0xf200
  95 #define SCI_GET                         0xf300
  96 #define SCI_SET                         0xf400
  97
  98 /* return codes */
  99 #define TOS_SUCCESS                     0x0000
 100 #define TOS_OPEN_CLOSE_OK               0x0044
 101 #define TOS_FAILURE                     0x1000
 102 #define TOS_NOT_SUPPORTED               0x8000
 103 #define TOS_ALREADY_OPEN                0x8100
 104 #define TOS_NOT_OPENED                  0x8200
 105 #define TOS_INPUT_DATA_ERROR            0x8300
 106 #define TOS_WRITE_PROTECTED             0x8400
 107 #define TOS_NOT_PRESENT                 0x8600
 108 #define TOS_FIFO_EMPTY                  0x8c00
 109 #define TOS_DATA_NOT_AVAILABLE          0x8d20
 110 #define TOS_NOT_INITIALIZED             0x8d50
 111
 112 /* registers */
 113 #define HCI_FAN                         0x0004
 114 #define HCI_TR_BACKLIGHT                0x0005
 115 #define HCI_SYSTEM_EVENT                0x0016
 116 #define HCI_VIDEO_OUT                   0x001c
 117 #define HCI_HOTKEY_EVENT                0x001e
 118 #define HCI_LCD_BRIGHTNESS              0x002a
 119 #define HCI_WIRELESS                    0x0056
 120 #define HCI_ACCELEROMETER               0x006d
 121 #define HCI_KBD_ILLUMINATION            0x0095
 122 #define HCI_ECO_MODE                    0x0097
 123 #define HCI_ACCELEROMETER2              0x00a6
 124 #define SCI_ILLUMINATION                0x014e
 125 #define SCI_KBD_ILLUM_STATUS            0x015c
 126 #define SCI_TOUCHPAD                    0x050e
 127
 128 /* field definitions */
 129 #define HCI_ACCEL_MASK                  0x7fff
 130 #define HCI_HOTKEY_DISABLE              0x0b
 131 #define HCI_HOTKEY_ENABLE               0x09
 132 #define HCI_LCD_BRIGHTNESS_BITS         3
 133 #define HCI_LCD_BRIGHTNESS_SHIFT        (16-HCI_LCD_BRIGHTNESS_BITS)
 134 #define HCI_LCD_BRIGHTNESS_LEVELS       (1 << HCI_LCD_BRIGHTNESS_BITS)
 135 #define HCI_MISC_SHIFT                  0x10
 136 #define HCI_VIDEO_OUT_LCD               0x1
 137 #define HCI_VIDEO_OUT_CRT               0x2
 138 #define HCI_VIDEO_OUT_TV                0x4
 139 #define HCI_WIRELESS_KILL_SWITCH        0x01
 140 #define HCI_WIRELESS_BT_PRESENT         0x0f
 141 #define HCI_WIRELESS_BT_ATTACH          0x40
 142 #define HCI_WIRELESS_BT_POWER           0x80
 143 #define SCI_KBD_MODE_MASK               0x1f
 144 #define SCI_KBD_MODE_FNZ                0x1
 145 #define SCI_KBD_MODE_AUTO               0x2
 146 #define SCI_KBD_MODE_ON                 0x8
 147 #define SCI_KBD_MODE_OFF                0x10
 148 #define SCI_KBD_TIME_MAX                0x3c001a
 149
 150 struct toshiba_acpi_dev {
 151         struct acpi_device *acpi_dev;
 152         const char *method_hci;
 153         struct rfkill *bt_rfk;
 154         struct input_dev *hotkey_dev;
 155         struct work_struct hotkey_work;
 156         struct backlight_device *backlight_dev;
 157         struct led_classdev led_dev;
 158         struct led_classdev kbd_led;
 159         struct led_classdev eco_led;
 160
 161         int force_fan;
 162         int last_key_event;
 163         int key_event_valid;
 164         int kbd_type;
 165         int kbd_mode;
 166         int kbd_time;
 167
 168         unsigned int illumination_supported:1;
 169         unsigned int video_supported:1;
 170         unsigned int fan_supported:1;
 171         unsigned int system_event_supported:1;
 172         unsigned int ntfy_supported:1;
 173         unsigned int info_supported:1;
 174         unsigned int tr_backlight_supported:1;
 175         unsigned int kbd_illum_supported:1;
 176         unsigned int kbd_led_registered:1;
 177         unsigned int touchpad_supported:1;
 178         unsigned int eco_supported:1;
 179         unsigned int accelerometer_supported:1;
 180         unsigned int sysfs_created:1;
 181
 182         struct mutex mutex;
 183 };
 184
 185 static struct toshiba_acpi_dev *toshiba_acpi;
 186
 187 static const struct acpi_device_id toshiba_device_ids[] = {
 188         {"TOS6200", 0},
 189         {"TOS6207", 0},
 190         {"TOS6208", 0},
 191         {"TOS1900", 0},
 192         {"", 0},
 193 };
 194 MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
 195
 196 static const struct key_entry toshiba_acpi_keymap[] = {
 197         { KE_KEY, 0x9e, { KEY_RFKILL } },
 198         { KE_KEY, 0x101, { KEY_MUTE } },
 199         { KE_KEY, 0x102, { KEY_ZOOMOUT } },
 200         { KE_KEY, 0x103, { KEY_ZOOMIN } },
 201         { KE_KEY, 0x10f, { KEY_TAB } },
 202         { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
 203         { KE_KEY, 0x139, { KEY_ZOOMRESET } },
 204         { KE_KEY, 0x13b, { KEY_COFFEE } },
 205         { KE_KEY, 0x13c, { KEY_BATTERY } },
 206         { KE_KEY, 0x13d, { KEY_SLEEP } },
 207         { KE_KEY, 0x13e, { KEY_SUSPEND } },
 208         { KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } },
 209         { KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } },
 210         { KE_KEY, 0x141, { KEY_BRIGHTNESSUP } },
 211         { KE_KEY, 0x142, { KEY_WLAN } },
 212         { KE_KEY, 0x143, { KEY_TOUCHPAD_TOGGLE } },
 213         { KE_KEY, 0x17f, { KEY_FN } },
 214         { KE_KEY, 0xb05, { KEY_PROG2 } },
 215         { KE_KEY, 0xb06, { KEY_WWW } },
 216         { KE_KEY, 0xb07, { KEY_MAIL } },
 217         { KE_KEY, 0xb30, { KEY_STOP } },
 218         { KE_KEY, 0xb31, { KEY_PREVIOUSSONG } },
 219         { KE_KEY, 0xb32, { KEY_NEXTSONG } },
 220         { KE_KEY, 0xb33, { KEY_PLAYPAUSE } },
 221         { KE_KEY, 0xb5a, { KEY_MEDIA } },
 222         { KE_IGNORE, 0x1430, { KEY_RESERVED } }, /* Wake from sleep */
 223         { KE_IGNORE, 0x1501, { KEY_RESERVED } }, /* Output changed */
 224         { KE_IGNORE, 0x1502, { KEY_RESERVED } }, /* HDMI plugged/unplugged */
 225         { KE_IGNORE, 0x1ABE, { KEY_RESERVED } }, /* Protection level set */
 226         { KE_IGNORE, 0x1ABF, { KEY_RESERVED } }, /* Protection level off */
 227         { KE_END, 0 },
 228 };
 229
 230 /* alternative keymap */
 231 static const struct dmi_system_id toshiba_alt_keymap_dmi[] = {
 232         {
 233                 .matches = {
 234                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 235                         DMI_MATCH(DMI_PRODUCT_NAME, "Satellite M840"),
 236                 },
 237         },
 238         {
 239                 .matches = {
 240                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 241                         DMI_MATCH(DMI_PRODUCT_NAME, "Qosmio X75-A"),
 242                 },
 243         },
 244         {
 245                 .matches = {
 246                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 247                         DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A50-A"),
 248                 },
 249         },
 250         {}
 251 };
 252
 253 static const struct key_entry toshiba_acpi_alt_keymap[] = {
 254         { KE_KEY, 0x157, { KEY_MUTE } },
 255         { KE_KEY, 0x102, { KEY_ZOOMOUT } },
 256         { KE_KEY, 0x103, { KEY_ZOOMIN } },
 257         { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
 258         { KE_KEY, 0x139, { KEY_ZOOMRESET } },
 259         { KE_KEY, 0x13e, { KEY_SWITCHVIDEOMODE } },
 260         { KE_KEY, 0x13c, { KEY_BRIGHTNESSDOWN } },
 261         { KE_KEY, 0x13d, { KEY_BRIGHTNESSUP } },
 262         { KE_KEY, 0x158, { KEY_WLAN } },
 263         { KE_KEY, 0x13f, { KEY_TOUCHPAD_TOGGLE } },
 264         { KE_END, 0 },
 265 };
 266
 267 /* utility
 268  */
 269
 270 static __inline__ void _set_bit(u32 * word, u32 mask, int value)
 271 {
 272         *word = (*word & ~mask) | (mask * value);
 273 }
 274
 275 /* acpi interface wrappers
 276  */
 277
 278 static int write_acpi_int(const char *methodName, int val)
 279 {
 280         acpi_status status;
 281
 282         status = acpi_execute_simple_method(NULL, (char *)methodName, val);
 283         return (status == AE_OK) ? 0 : -EIO;
 284 }
 285
 286 /* Perform a raw configuration call.  Here we don't care about input or output
 287  * buffer format.
 288  */
 289 static acpi_status tci_raw(struct toshiba_acpi_dev *dev,
 290                            const u32 in[TCI_WORDS], u32 out[TCI_WORDS])
 291 {
 292         struct acpi_object_list params;
 293         union acpi_object in_objs[TCI_WORDS];
 294         struct acpi_buffer results;
 295         union acpi_object out_objs[TCI_WORDS + 1];
 296         acpi_status status;
 297         int i;
 298
 299         params.count = TCI_WORDS;
 300         params.pointer = in_objs;
 301         for (i = 0; i < TCI_WORDS; ++i) {
 302                 in_objs[i].type = ACPI_TYPE_INTEGER;
 303                 in_objs[i].integer.value = in[i];
 304         }
 305
 306         results.length = sizeof(out_objs);
 307         results.pointer = out_objs;
 308
 309         status = acpi_evaluate_object(dev->acpi_dev->handle,
 310                                       (char *)dev->method_hci, &params,
 311                                       &results);
 312         if ((status == AE_OK) && (out_objs->package.count <= TCI_WORDS)) {
 313                 for (i = 0; i < out_objs->package.count; ++i) {
 314                         out[i] = out_objs->package.elements[i].integer.value;
 315                 }
 316         }
 317
 318         return status;
 319 }
 320
 321 /* common hci tasks (get or set one or two value)
 322  *
 323  * In addition to the ACPI status, the HCI system returns a result which
 324  * may be useful (such as "not supported").
 325  */
 326
 327 static u32 hci_write1(struct toshiba_acpi_dev *dev, u32 reg, u32 in1)
 328 {
 329         u32 in[TCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
 330         u32 out[TCI_WORDS];
 331         acpi_status status = tci_raw(dev, in, out);
 332
 333         return ACPI_SUCCESS(status) ? out[0] : TOS_FAILURE;
 334 }
 335
 336 static u32 hci_read1(struct toshiba_acpi_dev *dev, u32 reg, u32 *out1)
 337 {
 338         u32 in[TCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
 339         u32 out[TCI_WORDS];
 340         acpi_status status = tci_raw(dev, in, out);
 341         if (ACPI_FAILURE(status))
 342                 return TOS_FAILURE;
 343
 344         *out1 = out[2];
 345
 346         return out[0];
 347 }
 348
 349 static u32 hci_write2(struct toshiba_acpi_dev *dev, u32 reg, u32 in1, u32 in2)
 350 {
 351         u32 in[TCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 };
 352         u32 out[TCI_WORDS];
 353         acpi_status status = tci_raw(dev, in, out);
 354
 355         return ACPI_SUCCESS(status) ? out[0] : TOS_FAILURE;
 356 }
 357
 358 static u32 hci_read2(struct toshiba_acpi_dev *dev, u32 reg, u32 *out1, u32 *out2)
 359 {
 360         u32 in[TCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
 361         u32 out[TCI_WORDS];
 362         acpi_status status = tci_raw(dev, in, out);
 363         if (ACPI_FAILURE(status))
 364                 return TOS_FAILURE;
 365
 366         *out1 = out[2];
 367         *out2 = out[3];
 368
 369         return out[0];
 370 }
 371
 372 /* common sci tasks
 373  */
 374
 375 static int sci_open(struct toshiba_acpi_dev *dev)
 376 {
 377         u32 in[TCI_WORDS] = { SCI_OPEN, 0, 0, 0, 0, 0 };
 378         u32 out[TCI_WORDS];
 379         acpi_status status;
 380
 381         status = tci_raw(dev, in, out);
 382         if  (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
 383                 pr_err("ACPI call to open SCI failed\n");
 384                 return 0;
 385         }
 386
 387         if (out[0] == TOS_OPEN_CLOSE_OK) {
 388                 return 1;
 389         } else if (out[0] == TOS_ALREADY_OPEN) {
 390                 pr_info("Toshiba SCI already opened\n");
 391                 return 1;
 392         } else if (out[0] == TOS_NOT_PRESENT) {
 393                 pr_info("Toshiba SCI is not present\n");
 394         }
 395
 396         return 0;
 397 }
 398
 399 static void sci_close(struct toshiba_acpi_dev *dev)
 400 {
 401         u32 in[TCI_WORDS] = { SCI_CLOSE, 0, 0, 0, 0, 0 };
 402         u32 out[TCI_WORDS];
 403         acpi_status status;
 404
 405         status = tci_raw(dev, in, out);
 406         if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
 407                 pr_err("ACPI call to close SCI failed\n");
 408                 return;
 409         }
 410
 411         if (out[0] == TOS_OPEN_CLOSE_OK)
 412                 return;
 413         else if (out[0] == TOS_NOT_OPENED)
 414                 pr_info("Toshiba SCI not opened\n");
 415         else if (out[0] == TOS_NOT_PRESENT)
 416                 pr_info("Toshiba SCI is not present\n");
 417 }
 418
 419 static u32 sci_read(struct toshiba_acpi_dev *dev, u32 reg, u32 *out1)
 420 {
 421         u32 in[TCI_WORDS] = { SCI_GET, reg, 0, 0, 0, 0 };
 422         u32 out[TCI_WORDS];
 423         acpi_status status = tci_raw(dev, in, out);
 424         if (ACPI_FAILURE(status))
 425                 return TOS_FAILURE;
 426
 427         *out1 = out[2];
 428
 429         return out[0];
 430 }
 431
 432 static u32 sci_write(struct toshiba_acpi_dev *dev, u32 reg, u32 in1)
 433 {
 434         u32 in[TCI_WORDS] = { SCI_SET, reg, in1, 0, 0, 0 };
 435         u32 out[TCI_WORDS];
 436         acpi_status status = tci_raw(dev, in, out);
 437
 438         return ACPI_SUCCESS(status) ? out[0] : TOS_FAILURE;
 439 }
 440
 441 /* Illumination support */
 442 static int toshiba_illumination_available(struct toshiba_acpi_dev *dev)
 443 {
 444         u32 in[TCI_WORDS] = { SCI_GET, SCI_ILLUMINATION, 0, 0, 0, 0 };
 445         u32 out[TCI_WORDS];
 446         acpi_status status;
 447
 448         if (!sci_open(dev))
 449                 return 0;
 450
 451         status = tci_raw(dev, in, out);
 452         sci_close(dev);
 453         if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
 454                 pr_err("ACPI call to query Illumination support failed\n");
 455                 return 0;
 456         } else if (out[0] == TOS_NOT_SUPPORTED) {
 457                 pr_info("Illumination device not available\n");
 458                 return 0;
 459         }
 460
 461         return 1;
 462 }
 463
 464 static void toshiba_illumination_set(struct led_classdev *cdev,
 465                                      enum led_brightness brightness)
 466 {
 467         struct toshiba_acpi_dev *dev = container_of(cdev,
 468                         struct toshiba_acpi_dev, led_dev);
 469         u32 state, result;
 470
 471         /* First request : initialize communication. */
 472         if (!sci_open(dev))
 473                 return;
 474
 475         /* Switch the illumination on/off */
 476         state = brightness ? 1 : 0;
 477         result = sci_write(dev, SCI_ILLUMINATION, state);
 478         sci_close(dev);
 479         if (result == TOS_FAILURE) {
 480                 pr_err("ACPI call for illumination failed\n");
 481                 return;
 482         } else if (result == TOS_NOT_SUPPORTED) {
 483                 pr_info("Illumination not supported\n");
 484                 return;
 485         }
 486 }
 487
 488 static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
 489 {
 490         struct toshiba_acpi_dev *dev = container_of(cdev,
 491                         struct toshiba_acpi_dev, led_dev);
 492         u32 state, result;
 493
 494         /* First request : initialize communication. */
 495         if (!sci_open(dev))
 496                 return LED_OFF;
 497
 498         /* Check the illumination */
 499         result = sci_read(dev, SCI_ILLUMINATION, &state);
 500         sci_close(dev);
 501         if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
 502                 pr_err("ACPI call for illumination failed\n");
 503                 return LED_OFF;
 504         } else if (result == TOS_NOT_SUPPORTED) {
 505                 pr_info("Illumination not supported\n");
 506                 return LED_OFF;
 507         }
 508
 509         return state ? LED_FULL : LED_OFF;
 510 }
 511
 512 /* KBD Illumination */
 513 static int toshiba_kbd_illum_available(struct toshiba_acpi_dev *dev)
 514 {
 515         u32 in[TCI_WORDS] = { SCI_GET, SCI_KBD_ILLUM_STATUS, 0, 0, 0, 0 };
 516         u32 out[TCI_WORDS];
 517         acpi_status status;
 518
 519         if (!sci_open(dev))
 520                 return 0;
 521
 522         status = tci_raw(dev, in, out);
 523         sci_close(dev);
 524         if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
 525                 pr_err("ACPI call to query kbd illumination support failed\n");
 526                 return 0;
 527         } else if (out[0] == TOS_NOT_SUPPORTED) {
 528                 pr_info("Keyboard illumination not available\n");
 529                 return 0;
 530         }
 531
 532         /* Check for keyboard backlight timeout max value,
 533          * previous kbd backlight implementation set this to
 534          * 0x3c0003, and now the new implementation set this
 535          * to 0x3c001a, use this to distinguish between them
 536          */
 537         if (out[3] == SCI_KBD_TIME_MAX)
 538                 dev->kbd_type = 2;
 539         else
 540                 dev->kbd_type = 1;
 541         /* Get the current keyboard backlight mode */
 542         dev->kbd_mode = out[2] & SCI_KBD_MODE_MASK;
 543         /* Get the current time (1-60 seconds) */
 544         dev->kbd_time = out[2] >> HCI_MISC_SHIFT;
 545
 546         return 1;
 547 }
 548
 549 static int toshiba_kbd_illum_status_set(struct toshiba_acpi_dev *dev, u32 time)
 550 {
 551         u32 result;
 552
 553         if (!sci_open(dev))
 554                 return -EIO;
 555
 556         result = sci_write(dev, SCI_KBD_ILLUM_STATUS, time);
 557         sci_close(dev);
 558         if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
 559                 pr_err("ACPI call to set KBD backlight status failed\n");
 560                 return -EIO;
 561         } else if (result == TOS_NOT_SUPPORTED) {
 562                 pr_info("Keyboard backlight status not supported\n");
 563                 return -ENODEV;
 564         }
 565
 566         return 0;
 567 }
 568
 569 static int toshiba_kbd_illum_status_get(struct toshiba_acpi_dev *dev, u32 *time)
 570 {
 571         u32 result;
 572
 573         if (!sci_open(dev))
 574                 return -EIO;
 575
 576         result = sci_read(dev, SCI_KBD_ILLUM_STATUS, time);
 577         sci_close(dev);
 578         if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
 579                 pr_err("ACPI call to get KBD backlight status failed\n");
 580                 return -EIO;
 581         } else if (result == TOS_NOT_SUPPORTED) {
 582                 pr_info("Keyboard backlight status not supported\n");
 583                 return -ENODEV;
 584         }
 585
 586         return 0;
 587 }
 588
 589 static enum led_brightness toshiba_kbd_backlight_get(struct led_classdev *cdev)
 590 {
 591         struct toshiba_acpi_dev *dev = container_of(cdev,
 592                         struct toshiba_acpi_dev, kbd_led);
 593         u32 state, result;
 594
 595         /* Check the keyboard backlight state */
 596         result = hci_read1(dev, HCI_KBD_ILLUMINATION, &state);
 597         if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
 598                 pr_err("ACPI call to get the keyboard backlight failed\n");
 599                 return LED_OFF;
 600         } else if (result == TOS_NOT_SUPPORTED) {
 601                 pr_info("Keyboard backlight not supported\n");
 602                 return LED_OFF;
 603         }
 604
 605         return state ? LED_FULL : LED_OFF;
 606 }
 607
 608 static void toshiba_kbd_backlight_set(struct led_classdev *cdev,
 609                                      enum led_brightness brightness)
 610 {
 611         struct toshiba_acpi_dev *dev = container_of(cdev,
 612                         struct toshiba_acpi_dev, kbd_led);
 613         u32 state, result;
 614
 615         /* Set the keyboard backlight state */
 616         state = brightness ? 1 : 0;
 617         result = hci_write1(dev, HCI_KBD_ILLUMINATION, state);
 618         if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
 619                 pr_err("ACPI call to set KBD Illumination mode failed\n");
 620                 return;
 621         } else if (result == TOS_NOT_SUPPORTED) {
 622                 pr_info("Keyboard backlight not supported\n");
 623                 return;
 624         }
 625 }
 626
 627 /* TouchPad support */
 628 static int toshiba_touchpad_set(struct toshiba_acpi_dev *dev, u32 state)
 629 {
 630         u32 result;
 631
 632         if (!sci_open(dev))
 633                 return -EIO;
 634
 635         result = sci_write(dev, SCI_TOUCHPAD, state);
 636         sci_close(dev);
 637         if (result == TOS_FAILURE) {
 638                 pr_err("ACPI call to set the touchpad failed\n");
 639                 return -EIO;
 640         } else if (result == TOS_NOT_SUPPORTED) {
 641                 return -ENODEV;
 642         }
 643
 644         return 0;
 645 }
 646
 647 static int toshiba_touchpad_get(struct toshiba_acpi_dev *dev, u32 *state)
 648 {
 649         u32 result;
 650
 651         if (!sci_open(dev))
 652                 return -EIO;
 653
 654         result = sci_read(dev, SCI_TOUCHPAD, state);
 655         sci_close(dev);
 656         if (result == TOS_FAILURE) {
 657                 pr_err("ACPI call to query the touchpad failed\n");
 658                 return -EIO;
 659         } else if (result == TOS_NOT_SUPPORTED) {
 660                 return -ENODEV;
 661         }
 662
 663         return 0;
 664 }
 665
 666 /* Eco Mode support */
 667 static int toshiba_eco_mode_available(struct toshiba_acpi_dev *dev)
 668 {
 669         acpi_status status;
 670         u32 in[TCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 1, 0, 0 };
 671         u32 out[TCI_WORDS];
 672
 673         status = tci_raw(dev, in, out);
 674         if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
 675                 pr_info("ACPI call to get ECO led failed\n");
 676                 return 0;
 677         }
 678
 679         return 1;
 680 }
 681
 682 static enum led_brightness toshiba_eco_mode_get_status(struct led_classdev *cdev)
 683 {
 684         struct toshiba_acpi_dev *dev = container_of(cdev,
 685                         struct toshiba_acpi_dev, eco_led);
 686         u32 in[TCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 1, 0, 0 };
 687         u32 out[TCI_WORDS];
 688         acpi_status status;
 689
 690         status = tci_raw(dev, in, out);
 691         if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
 692                 pr_err("ACPI call to get ECO led failed\n");
 693                 return LED_OFF;
 694         }
 695
 696         return out[2] ? LED_FULL : LED_OFF;
 697 }
 698
 699 static void toshiba_eco_mode_set_status(struct led_classdev *cdev,
 700                                      enum led_brightness brightness)
 701 {
 702         struct toshiba_acpi_dev *dev = container_of(cdev,
 703                         struct toshiba_acpi_dev, eco_led);
 704         u32 in[TCI_WORDS] = { HCI_SET, HCI_ECO_MODE, 0, 1, 0, 0 };
 705         u32 out[TCI_WORDS];
 706         acpi_status status;
 707
 708         /* Switch the Eco Mode led on/off */
 709         in[2] = (brightness) ? 1 : 0;
 710         status = tci_raw(dev, in, out);
 711         if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
 712                 pr_err("ACPI call to set ECO led failed\n");
 713                 return;
 714         }
 715 }
 716
 717 /* Accelerometer support */
 718 static int toshiba_accelerometer_supported(struct toshiba_acpi_dev *dev)
 719 {
 720         u32 in[TCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER2, 0, 0, 0, 0 };
 721         u32 out[TCI_WORDS];
 722         acpi_status status;
 723
 724         /* Check if the accelerometer call exists,
 725          * this call also serves as initialization
 726          */
 727         status = tci_raw(dev, in, out);
 728         if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
 729                 pr_err("ACPI call to query the accelerometer failed\n");
 730                 return -EIO;
 731         } else if (out[0] == TOS_DATA_NOT_AVAILABLE ||
 732                    out[0] == TOS_NOT_INITIALIZED) {
 733                 pr_err("Accelerometer not initialized\n");
 734                 return -EIO;
 735         } else if (out[0] == TOS_NOT_SUPPORTED) {
 736                 pr_info("Accelerometer not supported\n");
 737                 return -ENODEV;
 738         }
 739
 740         return 0;
 741 }
 742
 743 static int toshiba_accelerometer_get(struct toshiba_acpi_dev *dev,
 744                                       u32 *xy, u32 *z)
 745 {
 746         u32 in[TCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER, 0, 1, 0, 0 };
 747         u32 out[TCI_WORDS];
 748         acpi_status status;
 749
 750         /* Check the Accelerometer status */
 751         status = tci_raw(dev, in, out);
 752         if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
 753                 pr_err("ACPI call to query the accelerometer failed\n");
 754                 return -EIO;
 755         }
 756
 757         *xy = out[2];
 758         *z = out[4];
 759
 760         return 0;
 761 }
 762
 763 /* Bluetooth rfkill handlers */
 764
 765 static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)
 766 {
 767         u32 hci_result;
 768         u32 value, value2;
 769
 770         value = 0;
 771         value2 = 0;
 772         hci_result = hci_read2(dev, HCI_WIRELESS, &value, &value2);
 773         if (hci_result == TOS_SUCCESS)
 774                 *present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;
 775
 776         return hci_result;
 777 }
 778
 779 static u32 hci_get_radio_state(struct toshiba_acpi_dev *dev, bool *radio_state)
 780 {
 781         u32 hci_result;
 782         u32 value, value2;
 783
 784         value = 0;
 785         value2 = 0x0001;
 786         hci_result = hci_read2(dev, HCI_WIRELESS, &value, &value2);
 787
 788         *radio_state = value & HCI_WIRELESS_KILL_SWITCH;
 789         return hci_result;
 790 }
 791
 792 static int bt_rfkill_set_block(void *data, bool blocked)
 793 {
 794         struct toshiba_acpi_dev *dev = data;
 795         u32 result1, result2;
 796         u32 value;
 797         int err;
 798         bool radio_state;
 799
 800         value = (blocked == false);
 801
 802         mutex_lock(&dev->mutex);
 803         if (hci_get_radio_state(dev, &radio_state) != TOS_SUCCESS) {
 804                 err = -EIO;
 805                 goto out;
 806         }
 807
 808         if (!radio_state) {
 809                 err = 0;
 810                 goto out;
 811         }
 812
 813         result1 = hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER);
 814         result2 = hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH);
 815
 816         if (result1 != TOS_SUCCESS || result2 != TOS_SUCCESS)
 817                 err = -EIO;
 818         else
 819                 err = 0;
 820  out:
 821         mutex_unlock(&dev->mutex);
 822         return err;
 823 }
 824
 825 static void bt_rfkill_poll(struct rfkill *rfkill, void *data)
 826 {
 827         bool new_rfk_state;
 828         bool value;
 829         u32 hci_result;
 830         struct toshiba_acpi_dev *dev = data;
 831
 832         mutex_lock(&dev->mutex);
 833
 834         hci_result = hci_get_radio_state(dev, &value);
 835         if (hci_result != TOS_SUCCESS) {
 836                 /* Can't do anything useful */
 837                 mutex_unlock(&dev->mutex);
 838                 return;
 839         }
 840
 841         new_rfk_state = value;
 842
 843         mutex_unlock(&dev->mutex);
 844
 845         if (rfkill_set_hw_state(rfkill, !new_rfk_state))
 846                 bt_rfkill_set_block(data, true);
 847 }
 848
 849 static const struct rfkill_ops toshiba_rfk_ops = {
 850         .set_block = bt_rfkill_set_block,
 851         .poll = bt_rfkill_poll,
 852 };
 853
 854 static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, bool *enabled)
 855 {
 856         u32 hci_result;
 857         u32 status;
 858
 859         hci_result = hci_read1(dev, HCI_TR_BACKLIGHT, &status);
 860         *enabled = !status;
 861         return hci_result == TOS_SUCCESS ? 0 : -EIO;
 862 }
 863
 864 static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, bool enable)
 865 {
 866         u32 hci_result;
 867         u32 value = !enable;
 868
 869         hci_result = hci_write1(dev, HCI_TR_BACKLIGHT, value);
 870         return hci_result == TOS_SUCCESS ? 0 : -EIO;
 871 }
 872
 873 static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ;
 874
 875 static int __get_lcd_brightness(struct toshiba_acpi_dev *dev)
 876 {
 877         u32 hci_result;
 878         u32 value;
 879         int brightness = 0;
 880
 881         if (dev->tr_backlight_supported) {
 882                 bool enabled;
 883                 int ret = get_tr_backlight_status(dev, &enabled);
 884                 if (ret)
 885                         return ret;
 886                 if (enabled)
 887                         return 0;
 888                 brightness++;
 889         }
 890
 891         hci_result = hci_read1(dev, HCI_LCD_BRIGHTNESS, &value);
 892         if (hci_result == TOS_SUCCESS)
 893                 return brightness + (value >> HCI_LCD_BRIGHTNESS_SHIFT);
 894
 895         return -EIO;
 896 }
 897
 898 static int get_lcd_brightness(struct backlight_device *bd)
 899 {
 900         struct toshiba_acpi_dev *dev = bl_get_data(bd);
 901         return __get_lcd_brightness(dev);
 902 }
 903
 904 static int lcd_proc_show(struct seq_file *m, void *v)
 905 {
 906         struct toshiba_acpi_dev *dev = m->private;
 907         int value;
 908         int levels;
 909
 910         if (!dev->backlight_dev)
 911                 return -ENODEV;
 912
 913         levels = dev->backlight_dev->props.max_brightness + 1;
 914         value = get_lcd_brightness(dev->backlight_dev);
 915         if (value >= 0) {
 916                 seq_printf(m, "brightness:              %d\n", value);
 917                 seq_printf(m, "brightness_levels:       %d\n", levels);
 918                 return 0;
 919         }
 920
 921         pr_err("Error reading LCD brightness\n");
 922         return -EIO;
 923 }
 924
 925 static int lcd_proc_open(struct inode *inode, struct file *file)
 926 {
 927         return single_open(file, lcd_proc_show, PDE_DATA(inode));
 928 }
 929
 930 static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value)
 931 {
 932         u32 hci_result;
 933
 934         if (dev->tr_backlight_supported) {
 935                 bool enable = !value;
 936                 int ret = set_tr_backlight_status(dev, enable);
 937                 if (ret)
 938                         return ret;
 939                 if (value)
 940                         value--;
 941         }
 942
 943         value = value << HCI_LCD_BRIGHTNESS_SHIFT;
 944         hci_result = hci_write1(dev, HCI_LCD_BRIGHTNESS, value);
 945         return hci_result == TOS_SUCCESS ? 0 : -EIO;
 946 }
 947
 948 static int set_lcd_status(struct backlight_device *bd)
 949 {
 950         struct toshiba_acpi_dev *dev = bl_get_data(bd);
 951         return set_lcd_brightness(dev, bd->props.brightness);
 952 }
 953
 954 static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
 955                               size_t count, loff_t *pos)
 956 {
 957         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
 958         char cmd[42];
 959         size_t len;
 960         int value;
 961         int ret;
 962         int levels = dev->backlight_dev->props.max_brightness + 1;
 963
 964         len = min(count, sizeof(cmd) - 1);
 965         if (copy_from_user(cmd, buf, len))
 966                 return -EFAULT;
 967         cmd[len] = '\0';
 968
 969         if (sscanf(cmd, " brightness : %i", &value) == 1 &&
 970             value >= 0 && value < levels) {
 971                 ret = set_lcd_brightness(dev, value);
 972                 if (ret == 0)
 973                         ret = count;
 974         } else {
 975                 ret = -EINVAL;
 976         }
 977         return ret;
 978 }
 979
 980 static const struct file_operations lcd_proc_fops = {
 981         .owner          = THIS_MODULE,
 982         .open           = lcd_proc_open,
 983         .read           = seq_read,
 984         .llseek         = seq_lseek,
 985         .release        = single_release,
 986         .write          = lcd_proc_write,
 987 };
 988
 989 static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
 990 {
 991         u32 hci_result;
 992
 993         hci_result = hci_read1(dev, HCI_VIDEO_OUT, status);
 994         return hci_result == TOS_SUCCESS ? 0 : -EIO;
 995 }
 996
 997 static int video_proc_show(struct seq_file *m, void *v)
 998 {
 999         struct toshiba_acpi_dev *dev = m->private;
1000         u32 value;
1001         int ret;
1002
1003         ret = get_video_status(dev, &value);
1004         if (!ret) {
1005                 int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
1006                 int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
1007                 int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
1008                 seq_printf(m, "lcd_out:                 %d\n", is_lcd);
1009                 seq_printf(m, "crt_out:                 %d\n", is_crt);
1010                 seq_printf(m, "tv_out:                  %d\n", is_tv);
1011         }
1012
1013         return ret;
1014 }
1015
1016 static int video_proc_open(struct inode *inode, struct file *file)
1017 {
1018         return single_open(file, video_proc_show, PDE_DATA(inode));
1019 }
1020
1021 static ssize_t video_proc_write(struct file *file, const char __user *buf,
1022                                 size_t count, loff_t *pos)
1023 {
1024         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1025         char *cmd, *buffer;
1026         int ret;
1027         int value;
1028         int remain = count;
1029         int lcd_out = -1;
1030         int crt_out = -1;
1031         int tv_out = -1;
1032         u32 video_out;
1033
1034         cmd = kmalloc(count + 1, GFP_KERNEL);
1035         if (!cmd)
1036                 return -ENOMEM;
1037         if (copy_from_user(cmd, buf, count)) {
1038                 kfree(cmd);
1039                 return -EFAULT;
1040         }
1041         cmd[count] = '\0';
1042
1043         buffer = cmd;
1044
1045         /* scan expression.  Multiple expressions may be delimited with ;
1046          *
1047          *  NOTE: to keep scanning simple, invalid fields are ignored
1048          */
1049         while (remain) {
1050                 if (sscanf(buffer, " lcd_out : %i", &value) == 1)
1051                         lcd_out = value & 1;
1052                 else if (sscanf(buffer, " crt_out : %i", &value) == 1)
1053                         crt_out = value & 1;
1054                 else if (sscanf(buffer, " tv_out : %i", &value) == 1)
1055                         tv_out = value & 1;
1056                 /* advance to one character past the next ; */
1057                 do {
1058                         ++buffer;
1059                         --remain;
1060                 }
1061                 while (remain && *(buffer - 1) != ';');
1062         }
1063
1064         kfree(cmd);
1065
1066         ret = get_video_status(dev, &video_out);
1067         if (!ret) {
1068                 unsigned int new_video_out = video_out;
1069                 if (lcd_out != -1)
1070                         _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
1071                 if (crt_out != -1)
1072                         _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out);
1073                 if (tv_out != -1)
1074                         _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out);
1075                 /* To avoid unnecessary video disruption, only write the new
1076                  * video setting if something changed. */
1077                 if (new_video_out != video_out)
1078                         ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
1079         }
1080
1081         return ret ? ret : count;
1082 }
1083
1084 static const struct file_operations video_proc_fops = {
1085         .owner          = THIS_MODULE,
1086         .open           = video_proc_open,
1087         .read           = seq_read,
1088         .llseek         = seq_lseek,
1089         .release        = single_release,
1090         .write          = video_proc_write,
1091 };
1092
1093 static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
1094 {
1095         u32 hci_result;
1096
1097         hci_result = hci_read1(dev, HCI_FAN, status);
1098         return hci_result == TOS_SUCCESS ? 0 : -EIO;
1099 }
1100
1101 static int fan_proc_show(struct seq_file *m, void *v)
1102 {
1103         struct toshiba_acpi_dev *dev = m->private;
1104         int ret;
1105         u32 value;
1106
1107         ret = get_fan_status(dev, &value);
1108         if (!ret) {
1109                 seq_printf(m, "running:                 %d\n", (value > 0));
1110                 seq_printf(m, "force_on:                %d\n", dev->force_fan);
1111         }
1112
1113         return ret;
1114 }
1115
1116 static int fan_proc_open(struct inode *inode, struct file *file)
1117 {
1118         return single_open(file, fan_proc_show, PDE_DATA(inode));
1119 }
1120
1121 static ssize_t fan_proc_write(struct file *file, const char __user *buf,
1122                               size_t count, loff_t *pos)
1123 {
1124         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1125         char cmd[42];
1126         size_t len;
1127         int value;
1128         u32 hci_result;
1129
1130         len = min(count, sizeof(cmd) - 1);
1131         if (copy_from_user(cmd, buf, len))
1132                 return -EFAULT;
1133         cmd[len] = '\0';
1134
1135         if (sscanf(cmd, " force_on : %i", &value) == 1 &&
1136             value >= 0 && value <= 1) {
1137                 hci_result = hci_write1(dev, HCI_FAN, value);
1138                 if (hci_result != TOS_SUCCESS)
1139                         return -EIO;
1140                 else
1141                         dev->force_fan = value;
1142         } else {
1143                 return -EINVAL;
1144         }
1145
1146         return count;
1147 }
1148
1149 static const struct file_operations fan_proc_fops = {
1150         .owner          = THIS_MODULE,
1151         .open           = fan_proc_open,
1152         .read           = seq_read,
1153         .llseek         = seq_lseek,
1154         .release        = single_release,
1155         .write          = fan_proc_write,
1156 };
1157
1158 static int keys_proc_show(struct seq_file *m, void *v)
1159 {
1160         struct toshiba_acpi_dev *dev = m->private;
1161         u32 hci_result;
1162         u32 value;
1163
1164         if (!dev->key_event_valid && dev->system_event_supported) {
1165                 hci_result = hci_read1(dev, HCI_SYSTEM_EVENT, &value);
1166                 if (hci_result == TOS_SUCCESS) {
1167                         dev->key_event_valid = 1;
1168                         dev->last_key_event = value;
1169                 } else if (hci_result == TOS_FIFO_EMPTY) {
1170                         /* better luck next time */
1171                 } else if (hci_result == TOS_NOT_SUPPORTED) {
1172                         /* This is a workaround for an unresolved issue on
1173                          * some machines where system events sporadically
1174                          * become disabled. */
1175                         hci_result = hci_write1(dev, HCI_SYSTEM_EVENT, 1);
1176                         pr_notice("Re-enabled hotkeys\n");
1177                 } else {
1178                         pr_err("Error reading hotkey status\n");
1179                         return -EIO;
1180                 }
1181         }
1182
1183         seq_printf(m, "hotkey_ready:            %d\n", dev->key_event_valid);
1184         seq_printf(m, "hotkey:                  0x%04x\n", dev->last_key_event);
1185         return 0;
1186 }
1187
1188 static int keys_proc_open(struct inode *inode, struct file *file)
1189 {
1190         return single_open(file, keys_proc_show, PDE_DATA(inode));
1191 }
1192
1193 static ssize_t keys_proc_write(struct file *file, const char __user *buf,
1194                                size_t count, loff_t *pos)
1195 {
1196         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1197         char cmd[42];
1198         size_t len;
1199         int value;
1200
1201         len = min(count, sizeof(cmd) - 1);
1202         if (copy_from_user(cmd, buf, len))
1203                 return -EFAULT;
1204         cmd[len] = '\0';
1205
1206         if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0) {
1207                 dev->key_event_valid = 0;
1208         } else {
1209                 return -EINVAL;
1210         }
1211
1212         return count;
1213 }
1214
1215 static const struct file_operations keys_proc_fops = {
1216         .owner          = THIS_MODULE,
1217         .open           = keys_proc_open,
1218         .read           = seq_read,
1219         .llseek         = seq_lseek,
1220         .release        = single_release,
1221         .write          = keys_proc_write,
1222 };
1223
1224 static int version_proc_show(struct seq_file *m, void *v)
1225 {
1226         seq_printf(m, "driver:                  %s\n", TOSHIBA_ACPI_VERSION);
1227         seq_printf(m, "proc_interface:          %d\n", PROC_INTERFACE_VERSION);
1228         return 0;
1229 }
1230
1231 static int version_proc_open(struct inode *inode, struct file *file)
1232 {
1233         return single_open(file, version_proc_show, PDE_DATA(inode));
1234 }
1235
1236 static const struct file_operations version_proc_fops = {
1237         .owner          = THIS_MODULE,
1238         .open           = version_proc_open,
1239         .read           = seq_read,
1240         .llseek         = seq_lseek,
1241         .release        = single_release,
1242 };
1243
1244 /* proc and module init
1245  */
1246
1247 #define PROC_TOSHIBA            "toshiba"
1248
1249 static void create_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
1250 {
1251         if (dev->backlight_dev)
1252                 proc_create_data("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1253                                  &lcd_proc_fops, dev);
1254         if (dev->video_supported)
1255                 proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1256                                  &video_proc_fops, dev);
1257         if (dev->fan_supported)
1258                 proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1259                                  &fan_proc_fops, dev);
1260         if (dev->hotkey_dev)
1261                 proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1262                                  &keys_proc_fops, dev);
1263         proc_create_data("version", S_IRUGO, toshiba_proc_dir,
1264                          &version_proc_fops, dev);
1265 }
1266
1267 static void remove_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
1268 {
1269         if (dev->backlight_dev)
1270                 remove_proc_entry("lcd", toshiba_proc_dir);
1271         if (dev->video_supported)
1272                 remove_proc_entry("video", toshiba_proc_dir);
1273         if (dev->fan_supported)
1274                 remove_proc_entry("fan", toshiba_proc_dir);
1275         if (dev->hotkey_dev)
1276                 remove_proc_entry("keys", toshiba_proc_dir);
1277         remove_proc_entry("version", toshiba_proc_dir);
1278 }
1279
1280 static const struct backlight_ops toshiba_backlight_data = {
1281         .options = BL_CORE_SUSPENDRESUME,
1282         .get_brightness = get_lcd_brightness,
1283         .update_status  = set_lcd_status,
1284 };
1285
1286 /*
1287  * Sysfs files
1288  */
1289 static ssize_t toshiba_kbd_bl_mode_store(struct device *dev,
1290                                          struct device_attribute *attr,
1291                                          const char *buf, size_t count);
1292 static ssize_t toshiba_kbd_bl_mode_show(struct device *dev,
1293                                         struct device_attribute *attr,
1294                                         char *buf);
1295 static ssize_t toshiba_kbd_type_show(struct device *dev,
1296                                      struct device_attribute *attr,
1297                                      char *buf);
1298 static ssize_t toshiba_available_kbd_modes_show(struct device *dev,
1299                                         struct device_attribute *attr,
1300                                         char *buf);
1301 static ssize_t toshiba_kbd_bl_timeout_store(struct device *dev,
1302                                             struct device_attribute *attr,
1303                                             const char *buf, size_t count);
1304 static ssize_t toshiba_kbd_bl_timeout_show(struct device *dev,
1305                                            struct device_attribute *attr,
1306                                            char *buf);
1307 static ssize_t toshiba_touchpad_store(struct device *dev,
1308                                       struct device_attribute *attr,
1309                                       const char *buf, size_t count);
1310 static ssize_t toshiba_touchpad_show(struct device *dev,
1311                                      struct device_attribute *attr,
1312                                      char *buf);
1313 static ssize_t toshiba_position_show(struct device *dev,
1314                                      struct device_attribute *attr,
1315                                      char *buf);
1316
1317 static DEVICE_ATTR(kbd_backlight_mode, S_IRUGO | S_IWUSR,
1318                    toshiba_kbd_bl_mode_show, toshiba_kbd_bl_mode_store);
1319 static DEVICE_ATTR(kbd_type, S_IRUGO, toshiba_kbd_type_show, NULL);
1320 static DEVICE_ATTR(available_kbd_modes, S_IRUGO,
1321                    toshiba_available_kbd_modes_show, NULL);
1322 static DEVICE_ATTR(kbd_backlight_timeout, S_IRUGO | S_IWUSR,
1323                    toshiba_kbd_bl_timeout_show, toshiba_kbd_bl_timeout_store);
1324 static DEVICE_ATTR(touchpad, S_IRUGO | S_IWUSR,
1325                    toshiba_touchpad_show, toshiba_touchpad_store);
1326 static DEVICE_ATTR(position, S_IRUGO, toshiba_position_show, NULL);
1327
1328 static struct attribute *toshiba_attributes[] = {
1329         &dev_attr_kbd_backlight_mode.attr,
1330         &dev_attr_kbd_type.attr,
1331         &dev_attr_available_kbd_modes.attr,
1332         &dev_attr_kbd_backlight_timeout.attr,
1333         &dev_attr_touchpad.attr,
1334         &dev_attr_position.attr,
1335         NULL,
1336 };
1337
1338 static umode_t toshiba_sysfs_is_visible(struct kobject *,
1339                                         struct attribute *, int);
1340
1341 static struct attribute_group toshiba_attr_group = {
1342         .is_visible = toshiba_sysfs_is_visible,
1343         .attrs = toshiba_attributes,
1344 };
1345
1346 static ssize_t toshiba_kbd_bl_mode_store(struct device *dev,
1347                                          struct device_attribute *attr,
1348                                          const char *buf, size_t count)
1349 {
1350         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1351         int mode;
1352         int time;
1353         int ret;
1354
1355
1356         ret = kstrtoint(buf, 0, &mode);
1357         if (ret)
1358                 return ret;
1359
1360         /* Check for supported modes depending on keyboard backlight type */
1361         if (toshiba->kbd_type == 1) {
1362                 /* Type 1 supports SCI_KBD_MODE_FNZ and SCI_KBD_MODE_AUTO */
1363                 if (mode != SCI_KBD_MODE_FNZ && mode != SCI_KBD_MODE_AUTO)
1364                         return -EINVAL;
1365         } else if (toshiba->kbd_type == 2) {
1366                 /* Type 2 doesn't support SCI_KBD_MODE_FNZ */
1367                 if (mode != SCI_KBD_MODE_AUTO && mode != SCI_KBD_MODE_ON &&
1368                     mode != SCI_KBD_MODE_OFF)
1369                         return -EINVAL;
1370         }
1371
1372         /* Set the Keyboard Backlight Mode where:
1373          *      Auto - KBD backlight turns off automatically in given time
1374          *      FN-Z - KBD backlight "toggles" when hotkey pressed
1375          *      ON   - KBD backlight is always on
1376          *      OFF  - KBD backlight is always off
1377          */
1378
1379         /* Only make a change if the actual mode has changed */
1380         if (toshiba->kbd_mode != mode) {
1381                 /* Shift the time to "base time" (0x3c0000 == 60 seconds) */
1382                 time = toshiba->kbd_time << HCI_MISC_SHIFT;
1383
1384                 /* OR the "base time" to the actual method format */
1385                 if (toshiba->kbd_type == 1) {
1386                         /* Type 1 requires the current mode */
1387                         time |= toshiba->kbd_mode;
1388                 } else if (toshiba->kbd_type == 2) {
1389                         /* Type 2 requires the desired mode */
1390                         time |= mode;
1391                 }
1392
1393                 ret = toshiba_kbd_illum_status_set(toshiba, time);
1394                 if (ret)
1395                         return ret;
1396
1397                 toshiba->kbd_mode = mode;
1398         }
1399
1400         return count;
1401 }
1402
1403 static ssize_t toshiba_kbd_bl_mode_show(struct device *dev,
1404                                         struct device_attribute *attr,
1405                                         char *buf)
1406 {
1407         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1408         u32 time;
1409
1410         if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
1411                 return -EIO;
1412
1413         return sprintf(buf, "%i\n", time & SCI_KBD_MODE_MASK);
1414 }
1415
1416 static ssize_t toshiba_kbd_type_show(struct device *dev,
1417                                      struct device_attribute *attr,
1418                                      char *buf)
1419 {
1420         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1421
1422         return sprintf(buf, "%d\n", toshiba->kbd_type);
1423 }
1424
1425 static ssize_t toshiba_available_kbd_modes_show(struct device *dev,
1426                                                 struct device_attribute *attr,
1427                                                 char *buf)
1428 {
1429         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1430
1431         if (toshiba->kbd_type == 1)
1432                 return sprintf(buf, "%x %x\n",
1433                                SCI_KBD_MODE_FNZ, SCI_KBD_MODE_AUTO);
1434
1435         return sprintf(buf, "%x %x %x\n",
1436                        SCI_KBD_MODE_AUTO, SCI_KBD_MODE_ON, SCI_KBD_MODE_OFF);
1437 }
1438
1439 static ssize_t toshiba_kbd_bl_timeout_store(struct device *dev,
1440                                             struct device_attribute *attr,
1441                                             const char *buf, size_t count)
1442 {
1443         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1444         int time;
1445         int ret;
1446
1447         ret = kstrtoint(buf, 0, &time);
1448         if (ret)
1449                 return ret;
1450
1451         /* Check for supported values depending on kbd_type */
1452         if (toshiba->kbd_type == 1) {
1453                 if (time < 0 || time > 60)
1454                         return -EINVAL;
1455         } else if (toshiba->kbd_type == 2) {
1456                 if (time < 1 || time > 60)
1457                         return -EINVAL;
1458         }
1459
1460         /* Set the Keyboard Backlight Timeout */
1461
1462         /* Only make a change if the actual timeout has changed */
1463         if (toshiba->kbd_time != time) {
1464                 /* Shift the time to "base time" (0x3c0000 == 60 seconds) */
1465                 time = time << HCI_MISC_SHIFT;
1466                 /* OR the "base time" to the actual method format */
1467                 if (toshiba->kbd_type == 1)
1468                         time |= SCI_KBD_MODE_FNZ;
1469                 else if (toshiba->kbd_type == 2)
1470                         time |= SCI_KBD_MODE_AUTO;
1471
1472                 ret = toshiba_kbd_illum_status_set(toshiba, time);
1473                 if (ret)
1474                         return ret;
1475
1476                 toshiba->kbd_time = time >> HCI_MISC_SHIFT;
1477         }
1478
1479         return count;
1480 }
1481
1482 static ssize_t toshiba_kbd_bl_timeout_show(struct device *dev,
1483                                            struct device_attribute *attr,
1484                                            char *buf)
1485 {
1486         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1487         u32 time;
1488
1489         if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
1490                 return -EIO;
1491
1492         return sprintf(buf, "%i\n", time >> HCI_MISC_SHIFT);
1493 }
1494
1495 static ssize_t toshiba_touchpad_store(struct device *dev,
1496                                       struct device_attribute *attr,
1497                                       const char *buf, size_t count)
1498 {
1499         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1500         int state;
1501         int ret;
1502
1503         /* Set the TouchPad on/off, 0 - Disable | 1 - Enable */
1504         ret = kstrtoint(buf, 0, &state);
1505         if (ret)
1506                 return ret;
1507         if (state != 0 && state != 1)
1508                 return -EINVAL;
1509
1510         ret = toshiba_touchpad_set(toshiba, state);
1511         if (ret)
1512                 return ret;
1513
1514         return count;
1515 }
1516
1517 static ssize_t toshiba_touchpad_show(struct device *dev,
1518                                      struct device_attribute *attr, char *buf)
1519 {
1520         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1521         u32 state;
1522         int ret;
1523
1524         ret = toshiba_touchpad_get(toshiba, &state);
1525         if (ret < 0)
1526                 return ret;
1527
1528         return sprintf(buf, "%i\n", state);
1529 }
1530
1531 static ssize_t toshiba_position_show(struct device *dev,
1532                                      struct device_attribute *attr, char *buf)
1533 {
1534         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1535         u32 xyval, zval, tmp;
1536         u16 x, y, z;
1537         int ret;
1538
1539         xyval = zval = 0;
1540         ret = toshiba_accelerometer_get(toshiba, &xyval, &zval);
1541         if (ret < 0)
1542                 return ret;
1543
1544         x = xyval & HCI_ACCEL_MASK;
1545         tmp = xyval >> HCI_MISC_SHIFT;
1546         y = tmp & HCI_ACCEL_MASK;
1547         z = zval & HCI_ACCEL_MASK;
1548
1549         return sprintf(buf, "%d %d %d\n", x, y, z);
1550 }
1551
1552 static umode_t toshiba_sysfs_is_visible(struct kobject *kobj,
1553                                         struct attribute *attr, int idx)
1554 {
1555         struct device *dev = container_of(kobj, struct device, kobj);
1556         struct toshiba_acpi_dev *drv = dev_get_drvdata(dev);
1557         bool exists = true;
1558
1559         if (attr == &dev_attr_kbd_backlight_mode.attr)
1560                 exists = (drv->kbd_illum_supported) ? true : false;
1561         else if (attr == &dev_attr_kbd_backlight_timeout.attr)
1562                 exists = (drv->kbd_mode == SCI_KBD_MODE_AUTO) ? true : false;
1563         else if (attr == &dev_attr_touchpad.attr)
1564                 exists = (drv->touchpad_supported) ? true : false;
1565         else if (attr == &dev_attr_position.attr)
1566                 exists = (drv->accelerometer_supported) ? true : false;
1567
1568         return exists ? attr->mode : 0;
1569 }
1570
1571 /*
1572  * Hotkeys
1573  */
1574 static int toshiba_acpi_enable_hotkeys(struct toshiba_acpi_dev *dev)
1575 {
1576         acpi_status status;
1577         u32 result;
1578
1579         status = acpi_evaluate_object(dev->acpi_dev->handle,
1580                                       "ENAB", NULL, NULL);
1581         if (ACPI_FAILURE(status))
1582                 return -ENODEV;
1583
1584         result = hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE);
1585         if (result == TOS_FAILURE)
1586                 return -EIO;
1587         else if (result == TOS_NOT_SUPPORTED)
1588                 return -ENODEV;
1589
1590         return 0;
1591 }
1592
1593 static bool toshiba_acpi_i8042_filter(unsigned char data, unsigned char str,
1594                                       struct serio *port)
1595 {
1596         if (str & I8042_STR_AUXDATA)
1597                 return false;
1598
1599         if (unlikely(data == 0xe0))
1600                 return false;
1601
1602         if ((data & 0x7f) == TOS1900_FN_SCAN) {
1603                 schedule_work(&toshiba_acpi->hotkey_work);
1604                 return true;
1605         }
1606
1607         return false;
1608 }
1609
1610 static void toshiba_acpi_hotkey_work(struct work_struct *work)
1611 {
1612         acpi_handle ec_handle = ec_get_handle();
1613         acpi_status status;
1614
1615         if (!ec_handle)
1616                 return;
1617
1618         status = acpi_evaluate_object(ec_handle, "NTFY", NULL, NULL);
1619         if (ACPI_FAILURE(status))
1620                 pr_err("ACPI NTFY method execution failed\n");
1621 }
1622
1623 /*
1624  * Returns hotkey scancode, or < 0 on failure.
1625  */
1626 static int toshiba_acpi_query_hotkey(struct toshiba_acpi_dev *dev)
1627 {
1628         unsigned long long value;
1629         acpi_status status;
1630
1631         status = acpi_evaluate_integer(dev->acpi_dev->handle, "INFO",
1632                                       NULL, &value);
1633         if (ACPI_FAILURE(status)) {
1634                 pr_err("ACPI INFO method execution failed\n");
1635                 return -EIO;
1636         }
1637
1638         return value;
1639 }
1640
1641 static void toshiba_acpi_report_hotkey(struct toshiba_acpi_dev *dev,
1642                                        int scancode)
1643 {
1644         if (scancode == 0x100)
1645                 return;
1646
1647         /* act on key press; ignore key release */
1648         if (scancode & 0x80)
1649                 return;
1650
1651         if (!sparse_keymap_report_event(dev->hotkey_dev, scancode, 1, true))
1652                 pr_info("Unknown key %x\n", scancode);
1653 }
1654
1655 static void toshiba_acpi_process_hotkeys(struct toshiba_acpi_dev *dev)
1656 {
1657         u32 hci_result, value;
1658         int retries = 3;
1659         int scancode;
1660
1661         if (dev->info_supported) {
1662                 scancode = toshiba_acpi_query_hotkey(dev);
1663                 if (scancode < 0)
1664                         pr_err("Failed to query hotkey event\n");
1665                 else if (scancode != 0)
1666                         toshiba_acpi_report_hotkey(dev, scancode);
1667         } else if (dev->system_event_supported) {
1668                 do {
1669                         hci_result = hci_read1(dev, HCI_SYSTEM_EVENT, &value);
1670                         switch (hci_result) {
1671                         case TOS_SUCCESS:
1672                                 toshiba_acpi_report_hotkey(dev, (int)value);
1673                                 break;
1674                         case TOS_NOT_SUPPORTED:
1675                                 /*
1676                                  * This is a workaround for an unresolved
1677                                  * issue on some machines where system events
1678                                  * sporadically become disabled.
1679                                  */
1680                                 hci_result =
1681                                         hci_write1(dev, HCI_SYSTEM_EVENT, 1);
1682                                 pr_notice("Re-enabled hotkeys\n");
1683                                 /* fall through */
1684                         default:
1685                                 retries--;
1686                                 break;
1687                         }
1688                 } while (retries && hci_result != TOS_FIFO_EMPTY);
1689         }
1690 }
1691
1692 static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
1693 {
1694         acpi_handle ec_handle;
1695         int error;
1696         u32 hci_result;
1697         const struct key_entry *keymap = toshiba_acpi_keymap;
1698
1699         dev->hotkey_dev = input_allocate_device();
1700         if (!dev->hotkey_dev)
1701                 return -ENOMEM;
1702
1703         dev->hotkey_dev->name = "Toshiba input device";
1704         dev->hotkey_dev->phys = "toshiba_acpi/input0";
1705         dev->hotkey_dev->id.bustype = BUS_HOST;
1706
1707         if (dmi_check_system(toshiba_alt_keymap_dmi))
1708                 keymap = toshiba_acpi_alt_keymap;
1709         error = sparse_keymap_setup(dev->hotkey_dev, keymap, NULL);
1710         if (error)
1711                 goto err_free_dev;
1712
1713         /*
1714          * For some machines the SCI responsible for providing hotkey
1715          * notification doesn't fire. We can trigger the notification
1716          * whenever the Fn key is pressed using the NTFY method, if
1717          * supported, so if it's present set up an i8042 key filter
1718          * for this purpose.
1719          */
1720         ec_handle = ec_get_handle();
1721         if (ec_handle && acpi_has_method(ec_handle, "NTFY")) {
1722                 INIT_WORK(&dev->hotkey_work, toshiba_acpi_hotkey_work);
1723
1724                 error = i8042_install_filter(toshiba_acpi_i8042_filter);
1725                 if (error) {
1726                         pr_err("Error installing key filter\n");
1727                         goto err_free_keymap;
1728                 }
1729
1730                 dev->ntfy_supported = 1;
1731         }
1732
1733         /*
1734          * Determine hotkey query interface. Prefer using the INFO
1735          * method when it is available.
1736          */
1737         if (acpi_has_method(dev->acpi_dev->handle, "INFO"))
1738                 dev->info_supported = 1;
1739         else {
1740                 hci_result = hci_write1(dev, HCI_SYSTEM_EVENT, 1);
1741                 if (hci_result == TOS_SUCCESS)
1742                         dev->system_event_supported = 1;
1743         }
1744
1745         if (!dev->info_supported && !dev->system_event_supported) {
1746                 pr_warn("No hotkey query interface found\n");
1747                 goto err_remove_filter;
1748         }
1749
1750         error = toshiba_acpi_enable_hotkeys(dev);
1751         if (error) {
1752                 pr_info("Unable to enable hotkeys\n");
1753                 goto err_remove_filter;
1754         }
1755
1756         error = input_register_device(dev->hotkey_dev);
1757         if (error) {
1758                 pr_info("Unable to register input device\n");
1759                 goto err_remove_filter;
1760         }
1761
1762         return 0;
1763
1764  err_remove_filter:
1765         if (dev->ntfy_supported)
1766                 i8042_remove_filter(toshiba_acpi_i8042_filter);
1767  err_free_keymap:
1768         sparse_keymap_free(dev->hotkey_dev);
1769  err_free_dev:
1770         input_free_device(dev->hotkey_dev);
1771         dev->hotkey_dev = NULL;
1772         return error;
1773 }
1774
1775 static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
1776 {
1777         struct backlight_properties props;
1778         int brightness;
1779         int ret;
1780         bool enabled;
1781
1782         /*
1783          * Some machines don't support the backlight methods at all, and
1784          * others support it read-only. Either of these is pretty useless,
1785          * so only register the backlight device if the backlight method
1786          * supports both reads and writes.
1787          */
1788         brightness = __get_lcd_brightness(dev);
1789         if (brightness < 0)
1790                 return 0;
1791         ret = set_lcd_brightness(dev, brightness);
1792         if (ret) {
1793                 pr_debug("Backlight method is read-only, disabling backlight support\n");
1794                 return 0;
1795         }
1796
1797         /* Determine whether or not BIOS supports transflective backlight */
1798         ret = get_tr_backlight_status(dev, &enabled);
1799         dev->tr_backlight_supported = !ret;
1800
1801         memset(&props, 0, sizeof(props));
1802         props.type = BACKLIGHT_PLATFORM;
1803         props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
1804
1805         /* adding an extra level and having 0 change to transflective mode */
1806         if (dev->tr_backlight_supported)
1807                 props.max_brightness++;
1808
1809         dev->backlight_dev = backlight_device_register("toshiba",
1810                                                        &dev->acpi_dev->dev,
1811                                                        dev,
1812                                                        &toshiba_backlight_data,
1813                                                        &props);
1814         if (IS_ERR(dev->backlight_dev)) {
1815                 ret = PTR_ERR(dev->backlight_dev);
1816                 pr_err("Could not register toshiba backlight device\n");
1817                 dev->backlight_dev = NULL;
1818                 return ret;
1819         }
1820
1821         dev->backlight_dev->props.brightness = brightness;
1822         return 0;
1823 }
1824
1825 static int toshiba_acpi_remove(struct acpi_device *acpi_dev)
1826 {
1827         struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
1828
1829         remove_toshiba_proc_entries(dev);
1830
1831         if (dev->sysfs_created)
1832                 sysfs_remove_group(&dev->acpi_dev->dev.kobj,
1833                                    &toshiba_attr_group);
1834
1835         if (dev->ntfy_supported) {
1836                 i8042_remove_filter(toshiba_acpi_i8042_filter);
1837                 cancel_work_sync(&dev->hotkey_work);
1838         }
1839
1840         if (dev->hotkey_dev) {
1841                 input_unregister_device(dev->hotkey_dev);
1842                 sparse_keymap_free(dev->hotkey_dev);
1843         }
1844
1845         if (dev->bt_rfk) {
1846                 rfkill_unregister(dev->bt_rfk);
1847                 rfkill_destroy(dev->bt_rfk);
1848         }
1849
1850         backlight_device_unregister(dev->backlight_dev);
1851
1852         if (dev->illumination_supported)
1853                 led_classdev_unregister(&dev->led_dev);
1854
1855         if (dev->kbd_led_registered)
1856                 led_classdev_unregister(&dev->kbd_led);
1857
1858         if (dev->eco_supported)
1859                 led_classdev_unregister(&dev->eco_led);
1860
1861         if (toshiba_acpi)
1862                 toshiba_acpi = NULL;
1863
1864         kfree(dev);
1865
1866         return 0;
1867 }
1868
1869 static const char *find_hci_method(acpi_handle handle)
1870 {
1871         if (acpi_has_method(handle, "GHCI"))
1872                 return "GHCI";
1873
1874         if (acpi_has_method(handle, "SPFC"))
1875                 return "SPFC";
1876
1877         return NULL;
1878 }
1879
1880 static int toshiba_acpi_add(struct acpi_device *acpi_dev)
1881 {
1882         struct toshiba_acpi_dev *dev;
1883         const char *hci_method;
1884         u32 dummy;
1885         bool bt_present;
1886         int ret = 0;
1887
1888         if (toshiba_acpi)
1889                 return -EBUSY;
1890
1891         pr_info("Toshiba Laptop ACPI Extras version %s\n",
1892                TOSHIBA_ACPI_VERSION);
1893
1894         hci_method = find_hci_method(acpi_dev->handle);
1895         if (!hci_method) {
1896                 pr_err("HCI interface not found\n");
1897                 return -ENODEV;
1898         }
1899
1900         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1901         if (!dev)
1902                 return -ENOMEM;
1903         dev->acpi_dev = acpi_dev;
1904         dev->method_hci = hci_method;
1905         acpi_dev->driver_data = dev;
1906         dev_set_drvdata(&acpi_dev->dev, dev);
1907
1908         if (toshiba_acpi_setup_keyboard(dev))
1909                 pr_info("Unable to activate hotkeys\n");
1910
1911         mutex_init(&dev->mutex);
1912
1913         ret = toshiba_acpi_setup_backlight(dev);
1914         if (ret)
1915                 goto error;
1916
1917         /* Register rfkill switch for Bluetooth */
1918         if (hci_get_bt_present(dev, &bt_present) == TOS_SUCCESS && bt_present) {
1919                 dev->bt_rfk = rfkill_alloc("Toshiba Bluetooth",
1920                                            &acpi_dev->dev,
1921                                            RFKILL_TYPE_BLUETOOTH,
1922                                            &toshiba_rfk_ops,
1923                                            dev);
1924                 if (!dev->bt_rfk) {
1925                         pr_err("unable to allocate rfkill device\n");
1926                         ret = -ENOMEM;
1927                         goto error;
1928                 }
1929
1930                 ret = rfkill_register(dev->bt_rfk);
1931                 if (ret) {
1932                         pr_err("unable to register rfkill device\n");
1933                         rfkill_destroy(dev->bt_rfk);
1934                         goto error;
1935                 }
1936         }
1937
1938         if (toshiba_illumination_available(dev)) {
1939                 dev->led_dev.name = "toshiba::illumination";
1940                 dev->led_dev.max_brightness = 1;
1941                 dev->led_dev.brightness_set = toshiba_illumination_set;
1942                 dev->led_dev.brightness_get = toshiba_illumination_get;
1943                 if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev))
1944                         dev->illumination_supported = 1;
1945         }
1946
1947         if (toshiba_eco_mode_available(dev)) {
1948                 dev->eco_led.name = "toshiba::eco_mode";
1949                 dev->eco_led.max_brightness = 1;
1950                 dev->eco_led.brightness_set = toshiba_eco_mode_set_status;
1951                 dev->eco_led.brightness_get = toshiba_eco_mode_get_status;
1952                 if (!led_classdev_register(&dev->acpi_dev->dev, &dev->eco_led))
1953                         dev->eco_supported = 1;
1954         }
1955
1956         dev->kbd_illum_supported = toshiba_kbd_illum_available(dev);
1957         /*
1958          * Only register the LED if KBD illumination is supported
1959          * and the keyboard backlight operation mode is set to FN-Z
1960          */
1961         if (dev->kbd_illum_supported && dev->kbd_mode == SCI_KBD_MODE_FNZ) {
1962                 dev->kbd_led.name = "toshiba::kbd_backlight";
1963                 dev->kbd_led.max_brightness = 1;
1964                 dev->kbd_led.brightness_set = toshiba_kbd_backlight_set;
1965                 dev->kbd_led.brightness_get = toshiba_kbd_backlight_get;
1966                 if (!led_classdev_register(&dev->acpi_dev->dev, &dev->kbd_led))
1967                         dev->kbd_led_registered = 1;
1968         }
1969
1970         ret = toshiba_touchpad_get(dev, &dummy);
1971         dev->touchpad_supported = !ret;
1972
1973         ret = toshiba_accelerometer_supported(dev);
1974         dev->accelerometer_supported = !ret;
1975
1976         /* Determine whether or not BIOS supports fan and video interfaces */
1977
1978         ret = get_video_status(dev, &dummy);
1979         dev->video_supported = !ret;
1980
1981         ret = get_fan_status(dev, &dummy);
1982         dev->fan_supported = !ret;
1983
1984         ret = sysfs_create_group(&dev->acpi_dev->dev.kobj,
1985                                  &toshiba_attr_group);
1986         if (ret) {
1987                 dev->sysfs_created = 0;
1988                 goto error;
1989         }
1990         dev->sysfs_created = !ret;
1991
1992         create_toshiba_proc_entries(dev);
1993
1994         toshiba_acpi = dev;
1995
1996         return 0;
1997
1998 error:
1999         toshiba_acpi_remove(acpi_dev);
2000         return ret;
2001 }
2002
2003 static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
2004 {
2005         struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
2006         int ret;
2007
2008         switch (event) {
2009         case 0x80: /* Hotkeys and some system events */
2010                 toshiba_acpi_process_hotkeys(dev);
2011                 break;
2012         case 0x92: /* Keyboard backlight mode changed */
2013                 /* Update sysfs entries */
2014                 ret = sysfs_update_group(&acpi_dev->dev.kobj,
2015                                          &toshiba_attr_group);
2016                 if (ret)
2017                         pr_err("Unable to update sysfs entries\n");
2018                 break;
2019         case 0x81: /* Unknown */
2020         case 0x82: /* Unknown */
2021         case 0x83: /* Unknown */
2022         case 0x8c: /* Unknown */
2023         case 0x8e: /* Unknown */
2024         case 0x8f: /* Unknown */
2025         case 0x90: /* Unknown */
2026         default:
2027                 pr_info("Unknown event received %x\n", event);
2028                 break;
2029         }
2030 }
2031
2032 #ifdef CONFIG_PM_SLEEP
2033 static int toshiba_acpi_suspend(struct device *device)
2034 {
2035         struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
2036         u32 result;
2037
2038         if (dev->hotkey_dev)
2039                 result = hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_DISABLE);
2040
2041         return 0;
2042 }
2043
2044 static int toshiba_acpi_resume(struct device *device)
2045 {
2046         struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
2047         int error;
2048
2049         if (dev->hotkey_dev) {
2050                 error = toshiba_acpi_enable_hotkeys(dev);
2051                 if (error)
2052                         pr_info("Unable to re-enable hotkeys\n");
2053         }
2054
2055         return 0;
2056 }
2057 #endif
2058
2059 static SIMPLE_DEV_PM_OPS(toshiba_acpi_pm,
2060                          toshiba_acpi_suspend, toshiba_acpi_resume);
2061
2062 static struct acpi_driver toshiba_acpi_driver = {
2063         .name   = "Toshiba ACPI driver",
2064         .owner  = THIS_MODULE,
2065         .ids    = toshiba_device_ids,
2066         .flags  = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
2067         .ops    = {
2068                 .add            = toshiba_acpi_add,
2069                 .remove         = toshiba_acpi_remove,
2070                 .notify         = toshiba_acpi_notify,
2071         },
2072         .drv.pm = &toshiba_acpi_pm,
2073 };
2074
2075 static int __init toshiba_acpi_init(void)
2076 {
2077         int ret;
2078
2079         /*
2080          * Machines with this WMI guid aren't supported due to bugs in
2081          * their AML. This check relies on wmi initializing before
2082          * toshiba_acpi to guarantee guids have been identified.
2083          */
2084         if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
2085                 return -ENODEV;
2086
2087         toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
2088         if (!toshiba_proc_dir) {
2089                 pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
2090                 return -ENODEV;
2091         }
2092
2093         ret = acpi_bus_register_driver(&toshiba_acpi_driver);
2094         if (ret) {
2095                 pr_err("Failed to register ACPI driver: %d\n", ret);
2096                 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
2097         }
2098
2099         return ret;
2100 }
2101
2102 static void __exit toshiba_acpi_exit(void)
2103 {
2104         acpi_bus_unregister_driver(&toshiba_acpi_driver);
2105         if (toshiba_proc_dir)
2106                 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
2107 }
2108
2109 module_init(toshiba_acpi_init);
2110 module_exit(toshiba_acpi_exit);