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 <asm/uaccess.h>
  60
  61 MODULE_AUTHOR("John Belmonte");
  62 MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
  63 MODULE_LICENSE("GPL");
  64
  65 #define TOSHIBA_WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
  66
  67 /* Scan code for Fn key on TOS1900 models */
  68 #define TOS1900_FN_SCAN         0x6e
  69
  70 /* Toshiba ACPI method paths */
  71 #define METHOD_VIDEO_OUT        "\\_SB_.VALX.DSSX"
  72
  73 /* Toshiba HCI interface definitions
  74  *
  75  * HCI is Toshiba's "Hardware Control Interface" which is supposed to
  76  * be uniform across all their models.  Ideally we would just call
  77  * dedicated ACPI methods instead of using this primitive interface.
  78  * However the ACPI methods seem to be incomplete in some areas (for
  79  * example they allow setting, but not reading, the LCD brightness value),
  80  * so this is still useful.
  81  *
  82  * SCI stands for "System Configuration Interface" which aim is to
  83  * conceal differences in hardware between different models.
  84  */
  85
  86 #define HCI_WORDS                       6
  87
  88 /* operations */
  89 #define HCI_SET                         0xff00
  90 #define HCI_GET                         0xfe00
  91 #define SCI_OPEN                        0xf100
  92 #define SCI_CLOSE                       0xf200
  93 #define SCI_GET                         0xf300
  94 #define SCI_SET                         0xf400
  95
  96 /* return codes */
  97 #define HCI_SUCCESS                     0x0000
  98 #define HCI_FAILURE                     0x1000
  99 #define HCI_NOT_SUPPORTED               0x8000
 100 #define HCI_EMPTY                       0x8c00
 101 #define HCI_DATA_NOT_AVAILABLE          0x8d20
 102 #define HCI_NOT_INITIALIZED             0x8d50
 103 #define SCI_OPEN_CLOSE_OK               0x0044
 104 #define SCI_ALREADY_OPEN                0x8100
 105 #define SCI_NOT_OPENED                  0x8200
 106 #define SCI_INPUT_DATA_ERROR            0x8300
 107 #define SCI_NOT_PRESENT                 0x8600
 108
 109 /* registers */
 110 #define HCI_FAN                         0x0004
 111 #define HCI_TR_BACKLIGHT                0x0005
 112 #define HCI_SYSTEM_EVENT                0x0016
 113 #define HCI_VIDEO_OUT                   0x001c
 114 #define HCI_HOTKEY_EVENT                0x001e
 115 #define HCI_LCD_BRIGHTNESS              0x002a
 116 #define HCI_WIRELESS                    0x0056
 117 #define HCI_ACCELEROMETER               0x006d
 118 #define HCI_KBD_ILLUMINATION            0x0095
 119 #define HCI_ECO_MODE                    0x0097
 120 #define HCI_ACCELEROMETER2              0x00a6
 121 #define SCI_ILLUMINATION                0x014e
 122 #define SCI_KBD_ILLUM_STATUS            0x015c
 123 #define SCI_TOUCHPAD                    0x050e
 124
 125 /* field definitions */
 126 #define HCI_ACCEL_MASK                  0x7fff
 127 #define HCI_HOTKEY_DISABLE              0x0b
 128 #define HCI_HOTKEY_ENABLE               0x09
 129 #define HCI_LCD_BRIGHTNESS_BITS         3
 130 #define HCI_LCD_BRIGHTNESS_SHIFT        (16-HCI_LCD_BRIGHTNESS_BITS)
 131 #define HCI_LCD_BRIGHTNESS_LEVELS       (1 << HCI_LCD_BRIGHTNESS_BITS)
 132 #define HCI_MISC_SHIFT                  0x10
 133 #define HCI_VIDEO_OUT_LCD               0x1
 134 #define HCI_VIDEO_OUT_CRT               0x2
 135 #define HCI_VIDEO_OUT_TV                0x4
 136 #define HCI_WIRELESS_KILL_SWITCH        0x01
 137 #define HCI_WIRELESS_BT_PRESENT         0x0f
 138 #define HCI_WIRELESS_BT_ATTACH          0x40
 139 #define HCI_WIRELESS_BT_POWER           0x80
 140 #define SCI_KBD_MODE_FNZ                0x1
 141 #define SCI_KBD_MODE_AUTO               0x2
 142
 143 struct toshiba_acpi_dev {
 144         struct acpi_device *acpi_dev;
 145         const char *method_hci;
 146         struct rfkill *bt_rfk;
 147         struct input_dev *hotkey_dev;
 148         struct work_struct hotkey_work;
 149         struct backlight_device *backlight_dev;
 150         struct led_classdev led_dev;
 151         struct led_classdev kbd_led;
 152         struct led_classdev eco_led;
 153
 154         int force_fan;
 155         int last_key_event;
 156         int key_event_valid;
 157         int kbd_mode;
 158         int kbd_time;
 159
 160         unsigned int illumination_supported:1;
 161         unsigned int video_supported:1;
 162         unsigned int fan_supported:1;
 163         unsigned int system_event_supported:1;
 164         unsigned int ntfy_supported:1;
 165         unsigned int info_supported:1;
 166         unsigned int tr_backlight_supported:1;
 167         unsigned int kbd_illum_supported:1;
 168         unsigned int kbd_led_registered:1;
 169         unsigned int touchpad_supported:1;
 170         unsigned int eco_supported:1;
 171         unsigned int accelerometer_supported:1;
 172         unsigned int sysfs_created:1;
 173
 174         struct mutex mutex;
 175 };
 176
 177 static struct toshiba_acpi_dev *toshiba_acpi;
 178
 179 static const struct acpi_device_id toshiba_device_ids[] = {
 180         {"TOS6200", 0},
 181         {"TOS6208", 0},
 182         {"TOS1900", 0},
 183         {"", 0},
 184 };
 185 MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
 186
 187 static const struct key_entry toshiba_acpi_keymap[] = {
 188         { KE_KEY, 0x9e, { KEY_RFKILL } },
 189         { KE_KEY, 0x101, { KEY_MUTE } },
 190         { KE_KEY, 0x102, { KEY_ZOOMOUT } },
 191         { KE_KEY, 0x103, { KEY_ZOOMIN } },
 192         { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
 193         { KE_KEY, 0x139, { KEY_ZOOMRESET } },
 194         { KE_KEY, 0x13b, { KEY_COFFEE } },
 195         { KE_KEY, 0x13c, { KEY_BATTERY } },
 196         { KE_KEY, 0x13d, { KEY_SLEEP } },
 197         { KE_KEY, 0x13e, { KEY_SUSPEND } },
 198         { KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } },
 199         { KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } },
 200         { KE_KEY, 0x141, { KEY_BRIGHTNESSUP } },
 201         { KE_KEY, 0x142, { KEY_WLAN } },
 202         { KE_KEY, 0x143, { KEY_TOUCHPAD_TOGGLE } },
 203         { KE_KEY, 0x17f, { KEY_FN } },
 204         { KE_KEY, 0xb05, { KEY_PROG2 } },
 205         { KE_KEY, 0xb06, { KEY_WWW } },
 206         { KE_KEY, 0xb07, { KEY_MAIL } },
 207         { KE_KEY, 0xb30, { KEY_STOP } },
 208         { KE_KEY, 0xb31, { KEY_PREVIOUSSONG } },
 209         { KE_KEY, 0xb32, { KEY_NEXTSONG } },
 210         { KE_KEY, 0xb33, { KEY_PLAYPAUSE } },
 211         { KE_KEY, 0xb5a, { KEY_MEDIA } },
 212         { KE_IGNORE, 0x1430, { KEY_RESERVED } },
 213         { KE_END, 0 },
 214 };
 215
 216 /* utility
 217  */
 218
 219 static __inline__ void _set_bit(u32 * word, u32 mask, int value)
 220 {
 221         *word = (*word & ~mask) | (mask * value);
 222 }
 223
 224 /* acpi interface wrappers
 225  */
 226
 227 static int write_acpi_int(const char *methodName, int val)
 228 {
 229         acpi_status status;
 230
 231         status = acpi_execute_simple_method(NULL, (char *)methodName, val);
 232         return (status == AE_OK) ? 0 : -EIO;
 233 }
 234
 235 /* Perform a raw HCI call.  Here we don't care about input or output buffer
 236  * format.
 237  */
 238 static acpi_status hci_raw(struct toshiba_acpi_dev *dev,
 239                            const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
 240 {
 241         struct acpi_object_list params;
 242         union acpi_object in_objs[HCI_WORDS];
 243         struct acpi_buffer results;
 244         union acpi_object out_objs[HCI_WORDS + 1];
 245         acpi_status status;
 246         int i;
 247
 248         params.count = HCI_WORDS;
 249         params.pointer = in_objs;
 250         for (i = 0; i < HCI_WORDS; ++i) {
 251                 in_objs[i].type = ACPI_TYPE_INTEGER;
 252                 in_objs[i].integer.value = in[i];
 253         }
 254
 255         results.length = sizeof(out_objs);
 256         results.pointer = out_objs;
 257
 258         status = acpi_evaluate_object(dev->acpi_dev->handle,
 259                                       (char *)dev->method_hci, &params,
 260                                       &results);
 261         if ((status == AE_OK) && (out_objs->package.count <= HCI_WORDS)) {
 262                 for (i = 0; i < out_objs->package.count; ++i) {
 263                         out[i] = out_objs->package.elements[i].integer.value;
 264                 }
 265         }
 266
 267         return status;
 268 }
 269
 270 /* common hci tasks (get or set one or two value)
 271  *
 272  * In addition to the ACPI status, the HCI system returns a result which
 273  * may be useful (such as "not supported").
 274  */
 275
 276 static acpi_status hci_write1(struct toshiba_acpi_dev *dev, u32 reg,
 277                               u32 in1, u32 *result)
 278 {
 279         u32 in[HCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
 280         u32 out[HCI_WORDS];
 281         acpi_status status = hci_raw(dev, in, out);
 282         *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
 283         return status;
 284 }
 285
 286 static acpi_status hci_read1(struct toshiba_acpi_dev *dev, u32 reg,
 287                              u32 *out1, u32 *result)
 288 {
 289         u32 in[HCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
 290         u32 out[HCI_WORDS];
 291         acpi_status status = hci_raw(dev, in, out);
 292         *out1 = out[2];
 293         *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
 294         return status;
 295 }
 296
 297 static acpi_status hci_write2(struct toshiba_acpi_dev *dev, u32 reg,
 298                               u32 in1, u32 in2, u32 *result)
 299 {
 300         u32 in[HCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 };
 301         u32 out[HCI_WORDS];
 302         acpi_status status = hci_raw(dev, in, out);
 303         *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
 304         return status;
 305 }
 306
 307 static acpi_status hci_read2(struct toshiba_acpi_dev *dev, u32 reg,
 308                              u32 *out1, u32 *out2, u32 *result)
 309 {
 310         u32 in[HCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
 311         u32 out[HCI_WORDS];
 312         acpi_status status = hci_raw(dev, in, out);
 313         *out1 = out[2];
 314         *out2 = out[3];
 315         *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
 316         return status;
 317 }
 318
 319 /* common sci tasks
 320  */
 321
 322 static int sci_open(struct toshiba_acpi_dev *dev)
 323 {
 324         u32 in[HCI_WORDS] = { SCI_OPEN, 0, 0, 0, 0, 0 };
 325         u32 out[HCI_WORDS];
 326         acpi_status status;
 327
 328         status = hci_raw(dev, in, out);
 329         if  (ACPI_FAILURE(status) || out[0] == HCI_FAILURE) {
 330                 pr_err("ACPI call to open SCI failed\n");
 331                 return 0;
 332         }
 333
 334         if (out[0] == SCI_OPEN_CLOSE_OK) {
 335                 return 1;
 336         } else if (out[0] == SCI_ALREADY_OPEN) {
 337                 pr_info("Toshiba SCI already opened\n");
 338                 return 1;
 339         } else if (out[0] == SCI_NOT_PRESENT) {
 340                 pr_info("Toshiba SCI is not present\n");
 341         }
 342
 343         return 0;
 344 }
 345
 346 static void sci_close(struct toshiba_acpi_dev *dev)
 347 {
 348         u32 in[HCI_WORDS] = { SCI_CLOSE, 0, 0, 0, 0, 0 };
 349         u32 out[HCI_WORDS];
 350         acpi_status status;
 351
 352         status = hci_raw(dev, in, out);
 353         if (ACPI_FAILURE(status) || out[0] == HCI_FAILURE) {
 354                 pr_err("ACPI call to close SCI failed\n");
 355                 return;
 356         }
 357
 358         if (out[0] == SCI_OPEN_CLOSE_OK)
 359                 return;
 360         else if (out[0] == SCI_NOT_OPENED)
 361                 pr_info("Toshiba SCI not opened\n");
 362         else if (out[0] == SCI_NOT_PRESENT)
 363                 pr_info("Toshiba SCI is not present\n");
 364 }
 365
 366 static acpi_status sci_read(struct toshiba_acpi_dev *dev, u32 reg,
 367                             u32 *out1, u32 *result)
 368 {
 369         u32 in[HCI_WORDS] = { SCI_GET, reg, 0, 0, 0, 0 };
 370         u32 out[HCI_WORDS];
 371         acpi_status status = hci_raw(dev, in, out);
 372         *out1 = out[2];
 373         *result = (ACPI_SUCCESS(status)) ? out[0] : HCI_FAILURE;
 374         return status;
 375 }
 376
 377 static acpi_status sci_write(struct toshiba_acpi_dev *dev, u32 reg,
 378                              u32 in1, u32 *result)
 379 {
 380         u32 in[HCI_WORDS] = { SCI_SET, reg, in1, 0, 0, 0 };
 381         u32 out[HCI_WORDS];
 382         acpi_status status = hci_raw(dev, in, out);
 383         *result = (ACPI_SUCCESS(status)) ? out[0] : HCI_FAILURE;
 384         return status;
 385 }
 386
 387 /* Illumination support */
 388 static int toshiba_illumination_available(struct toshiba_acpi_dev *dev)
 389 {
 390         u32 in[HCI_WORDS] = { SCI_GET, SCI_ILLUMINATION, 0, 0, 0, 0 };
 391         u32 out[HCI_WORDS];
 392         acpi_status status;
 393
 394         if (!sci_open(dev))
 395                 return 0;
 396
 397         status = hci_raw(dev, in, out);
 398         sci_close(dev);
 399         if (ACPI_FAILURE(status) || out[0] == HCI_FAILURE) {
 400                 pr_err("ACPI call to query Illumination support failed\n");
 401                 return 0;
 402         } else if (out[0] == HCI_NOT_SUPPORTED || out[1] != 1) {
 403                 pr_info("Illumination device not available\n");
 404                 return 0;
 405         }
 406
 407         return 1;
 408 }
 409
 410 static void toshiba_illumination_set(struct led_classdev *cdev,
 411                                      enum led_brightness brightness)
 412 {
 413         struct toshiba_acpi_dev *dev = container_of(cdev,
 414                         struct toshiba_acpi_dev, led_dev);
 415         u32 state, result;
 416         acpi_status status;
 417
 418         /* First request : initialize communication. */
 419         if (!sci_open(dev))
 420                 return;
 421
 422         /* Switch the illumination on/off */
 423         state = brightness ? 1 : 0;
 424         status = sci_write(dev, SCI_ILLUMINATION, state, &result);
 425         sci_close(dev);
 426         if (ACPI_FAILURE(status)) {
 427                 pr_err("ACPI call for illumination failed\n");
 428                 return;
 429         } else if (result == HCI_NOT_SUPPORTED) {
 430                 pr_info("Illumination not supported\n");
 431                 return;
 432         }
 433 }
 434
 435 static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
 436 {
 437         struct toshiba_acpi_dev *dev = container_of(cdev,
 438                         struct toshiba_acpi_dev, led_dev);
 439         u32 state, result;
 440         acpi_status status;
 441
 442         /* First request : initialize communication. */
 443         if (!sci_open(dev))
 444                 return LED_OFF;
 445
 446         /* Check the illumination */
 447         status = sci_read(dev, SCI_ILLUMINATION, &state, &result);
 448         sci_close(dev);
 449         if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
 450                 pr_err("ACPI call for illumination failed\n");
 451                 return LED_OFF;
 452         } else if (result == HCI_NOT_SUPPORTED) {
 453                 pr_info("Illumination not supported\n");
 454                 return LED_OFF;
 455         }
 456
 457         return state ? LED_FULL : LED_OFF;
 458 }
 459
 460 /* KBD Illumination */
 461 static int toshiba_kbd_illum_status_set(struct toshiba_acpi_dev *dev, u32 time)
 462 {
 463         u32 result;
 464         acpi_status status;
 465
 466         if (!sci_open(dev))
 467                 return -EIO;
 468
 469         status = sci_write(dev, SCI_KBD_ILLUM_STATUS, time, &result);
 470         sci_close(dev);
 471         if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
 472                 pr_err("ACPI call to set KBD backlight status failed\n");
 473                 return -EIO;
 474         } else if (result == HCI_NOT_SUPPORTED) {
 475                 pr_info("Keyboard backlight status not supported\n");
 476                 return -ENODEV;
 477         }
 478
 479         return 0;
 480 }
 481
 482 static int toshiba_kbd_illum_status_get(struct toshiba_acpi_dev *dev, u32 *time)
 483 {
 484         u32 result;
 485         acpi_status status;
 486
 487         if (!sci_open(dev))
 488                 return -EIO;
 489
 490         status = sci_read(dev, SCI_KBD_ILLUM_STATUS, time, &result);
 491         sci_close(dev);
 492         if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
 493                 pr_err("ACPI call to get KBD backlight status failed\n");
 494                 return -EIO;
 495         } else if (result == HCI_NOT_SUPPORTED) {
 496                 pr_info("Keyboard backlight status not supported\n");
 497                 return -ENODEV;
 498         }
 499
 500         return 0;
 501 }
 502
 503 static enum led_brightness toshiba_kbd_backlight_get(struct led_classdev *cdev)
 504 {
 505         struct toshiba_acpi_dev *dev = container_of(cdev,
 506                         struct toshiba_acpi_dev, kbd_led);
 507         u32 state, result;
 508         acpi_status status;
 509
 510         /* Check the keyboard backlight state */
 511         status = hci_read1(dev, HCI_KBD_ILLUMINATION, &state, &result);
 512         if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
 513                 pr_err("ACPI call to get the keyboard backlight failed\n");
 514                 return LED_OFF;
 515         } else if (result == HCI_NOT_SUPPORTED) {
 516                 pr_info("Keyboard backlight not supported\n");
 517                 return LED_OFF;
 518         }
 519
 520         return state ? LED_FULL : LED_OFF;
 521 }
 522
 523 static void toshiba_kbd_backlight_set(struct led_classdev *cdev,
 524                                      enum led_brightness brightness)
 525 {
 526         struct toshiba_acpi_dev *dev = container_of(cdev,
 527                         struct toshiba_acpi_dev, kbd_led);
 528         u32 state, result;
 529         acpi_status status;
 530
 531         /* Set the keyboard backlight state */
 532         state = brightness ? 1 : 0;
 533         status = hci_write1(dev, HCI_KBD_ILLUMINATION, state, &result);
 534         if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
 535                 pr_err("ACPI call to set KBD Illumination mode failed\n");
 536                 return;
 537         } else if (result == HCI_NOT_SUPPORTED) {
 538                 pr_info("Keyboard backlight not supported\n");
 539                 return;
 540         }
 541 }
 542
 543 /* TouchPad support */
 544 static int toshiba_touchpad_set(struct toshiba_acpi_dev *dev, u32 state)
 545 {
 546         u32 result;
 547         acpi_status status;
 548
 549         if (!sci_open(dev))
 550                 return -EIO;
 551
 552         status = sci_write(dev, SCI_TOUCHPAD, state, &result);
 553         sci_close(dev);
 554         if (ACPI_FAILURE(status)) {
 555                 pr_err("ACPI call to set the touchpad failed\n");
 556                 return -EIO;
 557         } else if (result == HCI_NOT_SUPPORTED) {
 558                 return -ENODEV;
 559         }
 560
 561         return 0;
 562 }
 563
 564 static int toshiba_touchpad_get(struct toshiba_acpi_dev *dev, u32 *state)
 565 {
 566         u32 result;
 567         acpi_status status;
 568
 569         if (!sci_open(dev))
 570                 return -EIO;
 571
 572         status = sci_read(dev, SCI_TOUCHPAD, state, &result);
 573         sci_close(dev);
 574         if (ACPI_FAILURE(status)) {
 575                 pr_err("ACPI call to query the touchpad failed\n");
 576                 return -EIO;
 577         } else if (result == HCI_NOT_SUPPORTED) {
 578                 return -ENODEV;
 579         }
 580
 581         return 0;
 582 }
 583
 584 /* Eco Mode support */
 585 static int toshiba_eco_mode_available(struct toshiba_acpi_dev *dev)
 586 {
 587         acpi_status status;
 588         u32 in[HCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 1, 0, 0 };
 589         u32 out[HCI_WORDS];
 590
 591         status = hci_raw(dev, in, out);
 592         if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
 593                 pr_info("ACPI call to get ECO led failed\n");
 594                 return 0;
 595         }
 596
 597         return 1;
 598 }
 599
 600 static enum led_brightness toshiba_eco_mode_get_status(struct led_classdev *cdev)
 601 {
 602         struct toshiba_acpi_dev *dev = container_of(cdev,
 603                         struct toshiba_acpi_dev, eco_led);
 604         u32 in[HCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 1, 0, 0 };
 605         u32 out[HCI_WORDS];
 606         acpi_status status;
 607
 608         status = hci_raw(dev, in, out);
 609         if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
 610                 pr_err("ACPI call to get ECO led failed\n");
 611                 return LED_OFF;
 612         }
 613
 614         return out[2] ? LED_FULL : LED_OFF;
 615 }
 616
 617 static void toshiba_eco_mode_set_status(struct led_classdev *cdev,
 618                                      enum led_brightness brightness)
 619 {
 620         struct toshiba_acpi_dev *dev = container_of(cdev,
 621                         struct toshiba_acpi_dev, eco_led);
 622         u32 in[HCI_WORDS] = { HCI_SET, HCI_ECO_MODE, 0, 1, 0, 0 };
 623         u32 out[HCI_WORDS];
 624         acpi_status status;
 625
 626         /* Switch the Eco Mode led on/off */
 627         in[2] = (brightness) ? 1 : 0;
 628         status = hci_raw(dev, in, out);
 629         if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
 630                 pr_err("ACPI call to set ECO led failed\n");
 631                 return;
 632         }
 633 }
 634
 635 /* Accelerometer support */
 636 static int toshiba_accelerometer_supported(struct toshiba_acpi_dev *dev)
 637 {
 638         u32 in[HCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER2, 0, 0, 0, 0 };
 639         u32 out[HCI_WORDS];
 640         acpi_status status;
 641
 642         /* Check if the accelerometer call exists,
 643          * this call also serves as initialization
 644          */
 645         status = hci_raw(dev, in, out);
 646         if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
 647                 pr_err("ACPI call to query the accelerometer failed\n");
 648                 return -EIO;
 649         } else if (out[0] == HCI_DATA_NOT_AVAILABLE ||
 650                    out[0] == HCI_NOT_INITIALIZED) {
 651                 pr_err("Accelerometer not initialized\n");
 652                 return -EIO;
 653         } else if (out[0] == HCI_NOT_SUPPORTED) {
 654                 pr_info("Accelerometer not supported\n");
 655                 return -ENODEV;
 656         }
 657
 658         return 0;
 659 }
 660
 661 static int toshiba_accelerometer_get(struct toshiba_acpi_dev *dev,
 662                                       u32 *xy, u32 *z)
 663 {
 664         u32 in[HCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER, 0, 1, 0, 0 };
 665         u32 out[HCI_WORDS];
 666         acpi_status status;
 667
 668         /* Check the Accelerometer status */
 669         status = hci_raw(dev, in, out);
 670         if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
 671                 pr_err("ACPI call to query the accelerometer failed\n");
 672                 return -EIO;
 673         }
 674
 675         *xy = out[2];
 676         *z = out[4];
 677
 678         return 0;
 679 }
 680
 681 /* Bluetooth rfkill handlers */
 682
 683 static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)
 684 {
 685         u32 hci_result;
 686         u32 value, value2;
 687
 688         value = 0;
 689         value2 = 0;
 690         hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
 691         if (hci_result == HCI_SUCCESS)
 692                 *present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;
 693
 694         return hci_result;
 695 }
 696
 697 static u32 hci_get_radio_state(struct toshiba_acpi_dev *dev, bool *radio_state)
 698 {
 699         u32 hci_result;
 700         u32 value, value2;
 701
 702         value = 0;
 703         value2 = 0x0001;
 704         hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
 705
 706         *radio_state = value & HCI_WIRELESS_KILL_SWITCH;
 707         return hci_result;
 708 }
 709
 710 static int bt_rfkill_set_block(void *data, bool blocked)
 711 {
 712         struct toshiba_acpi_dev *dev = data;
 713         u32 result1, result2;
 714         u32 value;
 715         int err;
 716         bool radio_state;
 717
 718         value = (blocked == false);
 719
 720         mutex_lock(&dev->mutex);
 721         if (hci_get_radio_state(dev, &radio_state) != HCI_SUCCESS) {
 722                 err = -EIO;
 723                 goto out;
 724         }
 725
 726         if (!radio_state) {
 727                 err = 0;
 728                 goto out;
 729         }
 730
 731         hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1);
 732         hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2);
 733
 734         if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS)
 735                 err = -EIO;
 736         else
 737                 err = 0;
 738  out:
 739         mutex_unlock(&dev->mutex);
 740         return err;
 741 }
 742
 743 static void bt_rfkill_poll(struct rfkill *rfkill, void *data)
 744 {
 745         bool new_rfk_state;
 746         bool value;
 747         u32 hci_result;
 748         struct toshiba_acpi_dev *dev = data;
 749
 750         mutex_lock(&dev->mutex);
 751
 752         hci_result = hci_get_radio_state(dev, &value);
 753         if (hci_result != HCI_SUCCESS) {
 754                 /* Can't do anything useful */
 755                 mutex_unlock(&dev->mutex);
 756                 return;
 757         }
 758
 759         new_rfk_state = value;
 760
 761         mutex_unlock(&dev->mutex);
 762
 763         if (rfkill_set_hw_state(rfkill, !new_rfk_state))
 764                 bt_rfkill_set_block(data, true);
 765 }
 766
 767 static const struct rfkill_ops toshiba_rfk_ops = {
 768         .set_block = bt_rfkill_set_block,
 769         .poll = bt_rfkill_poll,
 770 };
 771
 772 static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, bool *enabled)
 773 {
 774         u32 hci_result;
 775         u32 status;
 776
 777         hci_read1(dev, HCI_TR_BACKLIGHT, &status, &hci_result);
 778         *enabled = !status;
 779         return hci_result == HCI_SUCCESS ? 0 : -EIO;
 780 }
 781
 782 static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, bool enable)
 783 {
 784         u32 hci_result;
 785         u32 value = !enable;
 786
 787         hci_write1(dev, HCI_TR_BACKLIGHT, value, &hci_result);
 788         return hci_result == HCI_SUCCESS ? 0 : -EIO;
 789 }
 790
 791 static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ;
 792
 793 static int __get_lcd_brightness(struct toshiba_acpi_dev *dev)
 794 {
 795         u32 hci_result;
 796         u32 value;
 797         int brightness = 0;
 798
 799         if (dev->tr_backlight_supported) {
 800                 bool enabled;
 801                 int ret = get_tr_backlight_status(dev, &enabled);
 802                 if (ret)
 803                         return ret;
 804                 if (enabled)
 805                         return 0;
 806                 brightness++;
 807         }
 808
 809         hci_read1(dev, HCI_LCD_BRIGHTNESS, &value, &hci_result);
 810         if (hci_result == HCI_SUCCESS)
 811                 return brightness + (value >> HCI_LCD_BRIGHTNESS_SHIFT);
 812
 813         return -EIO;
 814 }
 815
 816 static int get_lcd_brightness(struct backlight_device *bd)
 817 {
 818         struct toshiba_acpi_dev *dev = bl_get_data(bd);
 819         return __get_lcd_brightness(dev);
 820 }
 821
 822 static int lcd_proc_show(struct seq_file *m, void *v)
 823 {
 824         struct toshiba_acpi_dev *dev = m->private;
 825         int value;
 826         int levels;
 827
 828         if (!dev->backlight_dev)
 829                 return -ENODEV;
 830
 831         levels = dev->backlight_dev->props.max_brightness + 1;
 832         value = get_lcd_brightness(dev->backlight_dev);
 833         if (value >= 0) {
 834                 seq_printf(m, "brightness:              %d\n", value);
 835                 seq_printf(m, "brightness_levels:       %d\n", levels);
 836                 return 0;
 837         }
 838
 839         pr_err("Error reading LCD brightness\n");
 840         return -EIO;
 841 }
 842
 843 static int lcd_proc_open(struct inode *inode, struct file *file)
 844 {
 845         return single_open(file, lcd_proc_show, PDE_DATA(inode));
 846 }
 847
 848 static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value)
 849 {
 850         u32 hci_result;
 851
 852         if (dev->tr_backlight_supported) {
 853                 bool enable = !value;
 854                 int ret = set_tr_backlight_status(dev, enable);
 855                 if (ret)
 856                         return ret;
 857                 if (value)
 858                         value--;
 859         }
 860
 861         value = value << HCI_LCD_BRIGHTNESS_SHIFT;
 862         hci_write1(dev, HCI_LCD_BRIGHTNESS, value, &hci_result);
 863         return hci_result == HCI_SUCCESS ? 0 : -EIO;
 864 }
 865
 866 static int set_lcd_status(struct backlight_device *bd)
 867 {
 868         struct toshiba_acpi_dev *dev = bl_get_data(bd);
 869         return set_lcd_brightness(dev, bd->props.brightness);
 870 }
 871
 872 static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
 873                               size_t count, loff_t *pos)
 874 {
 875         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
 876         char cmd[42];
 877         size_t len;
 878         int value;
 879         int ret;
 880         int levels = dev->backlight_dev->props.max_brightness + 1;
 881
 882         len = min(count, sizeof(cmd) - 1);
 883         if (copy_from_user(cmd, buf, len))
 884                 return -EFAULT;
 885         cmd[len] = '\0';
 886
 887         if (sscanf(cmd, " brightness : %i", &value) == 1 &&
 888             value >= 0 && value < levels) {
 889                 ret = set_lcd_brightness(dev, value);
 890                 if (ret == 0)
 891                         ret = count;
 892         } else {
 893                 ret = -EINVAL;
 894         }
 895         return ret;
 896 }
 897
 898 static const struct file_operations lcd_proc_fops = {
 899         .owner          = THIS_MODULE,
 900         .open           = lcd_proc_open,
 901         .read           = seq_read,
 902         .llseek         = seq_lseek,
 903         .release        = single_release,
 904         .write          = lcd_proc_write,
 905 };
 906
 907 static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
 908 {
 909         u32 hci_result;
 910
 911         hci_read1(dev, HCI_VIDEO_OUT, status, &hci_result);
 912         return hci_result == HCI_SUCCESS ? 0 : -EIO;
 913 }
 914
 915 static int video_proc_show(struct seq_file *m, void *v)
 916 {
 917         struct toshiba_acpi_dev *dev = m->private;
 918         u32 value;
 919         int ret;
 920
 921         ret = get_video_status(dev, &value);
 922         if (!ret) {
 923                 int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
 924                 int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
 925                 int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
 926                 seq_printf(m, "lcd_out:                 %d\n", is_lcd);
 927                 seq_printf(m, "crt_out:                 %d\n", is_crt);
 928                 seq_printf(m, "tv_out:                  %d\n", is_tv);
 929         }
 930
 931         return ret;
 932 }
 933
 934 static int video_proc_open(struct inode *inode, struct file *file)
 935 {
 936         return single_open(file, video_proc_show, PDE_DATA(inode));
 937 }
 938
 939 static ssize_t video_proc_write(struct file *file, const char __user *buf,
 940                                 size_t count, loff_t *pos)
 941 {
 942         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
 943         char *cmd, *buffer;
 944         int ret;
 945         int value;
 946         int remain = count;
 947         int lcd_out = -1;
 948         int crt_out = -1;
 949         int tv_out = -1;
 950         u32 video_out;
 951
 952         cmd = kmalloc(count + 1, GFP_KERNEL);
 953         if (!cmd)
 954                 return -ENOMEM;
 955         if (copy_from_user(cmd, buf, count)) {
 956                 kfree(cmd);
 957                 return -EFAULT;
 958         }
 959         cmd[count] = '\0';
 960
 961         buffer = cmd;
 962
 963         /* scan expression.  Multiple expressions may be delimited with ;
 964          *
 965          *  NOTE: to keep scanning simple, invalid fields are ignored
 966          */
 967         while (remain) {
 968                 if (sscanf(buffer, " lcd_out : %i", &value) == 1)
 969                         lcd_out = value & 1;
 970                 else if (sscanf(buffer, " crt_out : %i", &value) == 1)
 971                         crt_out = value & 1;
 972                 else if (sscanf(buffer, " tv_out : %i", &value) == 1)
 973                         tv_out = value & 1;
 974                 /* advance to one character past the next ; */
 975                 do {
 976                         ++buffer;
 977                         --remain;
 978                 }
 979                 while (remain && *(buffer - 1) != ';');
 980         }
 981
 982         kfree(cmd);
 983
 984         ret = get_video_status(dev, &video_out);
 985         if (!ret) {
 986                 unsigned int new_video_out = video_out;
 987                 if (lcd_out != -1)
 988                         _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
 989                 if (crt_out != -1)
 990                         _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out);
 991                 if (tv_out != -1)
 992                         _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out);
 993                 /* To avoid unnecessary video disruption, only write the new
 994                  * video setting if something changed. */
 995                 if (new_video_out != video_out)
 996                         ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
 997         }
 998
 999         return ret ? ret : count;
1000 }
1001
1002 static const struct file_operations video_proc_fops = {
1003         .owner          = THIS_MODULE,
1004         .open           = video_proc_open,
1005         .read           = seq_read,
1006         .llseek         = seq_lseek,
1007         .release        = single_release,
1008         .write          = video_proc_write,
1009 };
1010
1011 static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
1012 {
1013         u32 hci_result;
1014
1015         hci_read1(dev, HCI_FAN, status, &hci_result);
1016         return hci_result == HCI_SUCCESS ? 0 : -EIO;
1017 }
1018
1019 static int fan_proc_show(struct seq_file *m, void *v)
1020 {
1021         struct toshiba_acpi_dev *dev = m->private;
1022         int ret;
1023         u32 value;
1024
1025         ret = get_fan_status(dev, &value);
1026         if (!ret) {
1027                 seq_printf(m, "running:                 %d\n", (value > 0));
1028                 seq_printf(m, "force_on:                %d\n", dev->force_fan);
1029         }
1030
1031         return ret;
1032 }
1033
1034 static int fan_proc_open(struct inode *inode, struct file *file)
1035 {
1036         return single_open(file, fan_proc_show, PDE_DATA(inode));
1037 }
1038
1039 static ssize_t fan_proc_write(struct file *file, const char __user *buf,
1040                               size_t count, loff_t *pos)
1041 {
1042         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1043         char cmd[42];
1044         size_t len;
1045         int value;
1046         u32 hci_result;
1047
1048         len = min(count, sizeof(cmd) - 1);
1049         if (copy_from_user(cmd, buf, len))
1050                 return -EFAULT;
1051         cmd[len] = '\0';
1052
1053         if (sscanf(cmd, " force_on : %i", &value) == 1 &&
1054             value >= 0 && value <= 1) {
1055                 hci_write1(dev, HCI_FAN, value, &hci_result);
1056                 if (hci_result != HCI_SUCCESS)
1057                         return -EIO;
1058                 else
1059                         dev->force_fan = value;
1060         } else {
1061                 return -EINVAL;
1062         }
1063
1064         return count;
1065 }
1066
1067 static const struct file_operations fan_proc_fops = {
1068         .owner          = THIS_MODULE,
1069         .open           = fan_proc_open,
1070         .read           = seq_read,
1071         .llseek         = seq_lseek,
1072         .release        = single_release,
1073         .write          = fan_proc_write,
1074 };
1075
1076 static int keys_proc_show(struct seq_file *m, void *v)
1077 {
1078         struct toshiba_acpi_dev *dev = m->private;
1079         u32 hci_result;
1080         u32 value;
1081
1082         if (!dev->key_event_valid && dev->system_event_supported) {
1083                 hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
1084                 if (hci_result == HCI_SUCCESS) {
1085                         dev->key_event_valid = 1;
1086                         dev->last_key_event = value;
1087                 } else if (hci_result == HCI_EMPTY) {
1088                         /* better luck next time */
1089                 } else if (hci_result == HCI_NOT_SUPPORTED) {
1090                         /* This is a workaround for an unresolved issue on
1091                          * some machines where system events sporadically
1092                          * become disabled. */
1093                         hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
1094                         pr_notice("Re-enabled hotkeys\n");
1095                 } else {
1096                         pr_err("Error reading hotkey status\n");
1097                         return -EIO;
1098                 }
1099         }
1100
1101         seq_printf(m, "hotkey_ready:            %d\n", dev->key_event_valid);
1102         seq_printf(m, "hotkey:                  0x%04x\n", dev->last_key_event);
1103         return 0;
1104 }
1105
1106 static int keys_proc_open(struct inode *inode, struct file *file)
1107 {
1108         return single_open(file, keys_proc_show, PDE_DATA(inode));
1109 }
1110
1111 static ssize_t keys_proc_write(struct file *file, const char __user *buf,
1112                                size_t count, loff_t *pos)
1113 {
1114         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1115         char cmd[42];
1116         size_t len;
1117         int value;
1118
1119         len = min(count, sizeof(cmd) - 1);
1120         if (copy_from_user(cmd, buf, len))
1121                 return -EFAULT;
1122         cmd[len] = '\0';
1123
1124         if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0) {
1125                 dev->key_event_valid = 0;
1126         } else {
1127                 return -EINVAL;
1128         }
1129
1130         return count;
1131 }
1132
1133 static const struct file_operations keys_proc_fops = {
1134         .owner          = THIS_MODULE,
1135         .open           = keys_proc_open,
1136         .read           = seq_read,
1137         .llseek         = seq_lseek,
1138         .release        = single_release,
1139         .write          = keys_proc_write,
1140 };
1141
1142 static int version_proc_show(struct seq_file *m, void *v)
1143 {
1144         seq_printf(m, "driver:                  %s\n", TOSHIBA_ACPI_VERSION);
1145         seq_printf(m, "proc_interface:          %d\n", PROC_INTERFACE_VERSION);
1146         return 0;
1147 }
1148
1149 static int version_proc_open(struct inode *inode, struct file *file)
1150 {
1151         return single_open(file, version_proc_show, PDE_DATA(inode));
1152 }
1153
1154 static const struct file_operations version_proc_fops = {
1155         .owner          = THIS_MODULE,
1156         .open           = version_proc_open,
1157         .read           = seq_read,
1158         .llseek         = seq_lseek,
1159         .release        = single_release,
1160 };
1161
1162 /* proc and module init
1163  */
1164
1165 #define PROC_TOSHIBA            "toshiba"
1166
1167 static void create_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
1168 {
1169         if (dev->backlight_dev)
1170                 proc_create_data("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1171                                  &lcd_proc_fops, dev);
1172         if (dev->video_supported)
1173                 proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1174                                  &video_proc_fops, dev);
1175         if (dev->fan_supported)
1176                 proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1177                                  &fan_proc_fops, dev);
1178         if (dev->hotkey_dev)
1179                 proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1180                                  &keys_proc_fops, dev);
1181         proc_create_data("version", S_IRUGO, toshiba_proc_dir,
1182                          &version_proc_fops, dev);
1183 }
1184
1185 static void remove_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
1186 {
1187         if (dev->backlight_dev)
1188                 remove_proc_entry("lcd", toshiba_proc_dir);
1189         if (dev->video_supported)
1190                 remove_proc_entry("video", toshiba_proc_dir);
1191         if (dev->fan_supported)
1192                 remove_proc_entry("fan", toshiba_proc_dir);
1193         if (dev->hotkey_dev)
1194                 remove_proc_entry("keys", toshiba_proc_dir);
1195         remove_proc_entry("version", toshiba_proc_dir);
1196 }
1197
1198 static const struct backlight_ops toshiba_backlight_data = {
1199         .options = BL_CORE_SUSPENDRESUME,
1200         .get_brightness = get_lcd_brightness,
1201         .update_status  = set_lcd_status,
1202 };
1203
1204 /*
1205  * Sysfs files
1206  */
1207
1208 static ssize_t toshiba_kbd_bl_mode_store(struct device *dev,
1209                                          struct device_attribute *attr,
1210                                          const char *buf, size_t count)
1211 {
1212         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1213         int mode = -1;
1214         int time = -1;
1215
1216         if (sscanf(buf, "%i", &mode) != 1 && (mode != 2 || mode != 1))
1217                 return -EINVAL;
1218
1219         /* Set the Keyboard Backlight Mode where:
1220          * Mode - Auto (2) | FN-Z (1)
1221          *      Auto - KBD backlight turns off automatically in given time
1222          *      FN-Z - KBD backlight "toggles" when hotkey pressed
1223          */
1224         if (mode != -1 && toshiba->kbd_mode != mode) {
1225                 time = toshiba->kbd_time << HCI_MISC_SHIFT;
1226                 time = time + toshiba->kbd_mode;
1227                 if (toshiba_kbd_illum_status_set(toshiba, time) < 0)
1228                         return -EIO;
1229                 toshiba->kbd_mode = mode;
1230         }
1231
1232         return count;
1233 }
1234
1235 static ssize_t toshiba_kbd_bl_mode_show(struct device *dev,
1236                                         struct device_attribute *attr,
1237                                         char *buf)
1238 {
1239         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1240         u32 time;
1241
1242         if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
1243                 return -EIO;
1244
1245         return sprintf(buf, "%i\n", time & 0x07);
1246 }
1247
1248 static ssize_t toshiba_kbd_bl_timeout_store(struct device *dev,
1249                                             struct device_attribute *attr,
1250                                             const char *buf, size_t count)
1251 {
1252         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1253         int time = -1;
1254
1255         if (sscanf(buf, "%i", &time) != 1 && (time < 0 || time > 60))
1256                 return -EINVAL;
1257
1258         /* Set the Keyboard Backlight Timeout: 0-60 seconds */
1259         if (time != -1 && toshiba->kbd_time != time) {
1260                 time = time << HCI_MISC_SHIFT;
1261                 time = (toshiba->kbd_mode == SCI_KBD_MODE_AUTO) ?
1262                                                         time + 1 : time + 2;
1263                 if (toshiba_kbd_illum_status_set(toshiba, time) < 0)
1264                         return -EIO;
1265                 toshiba->kbd_time = time >> HCI_MISC_SHIFT;
1266         }
1267
1268         return count;
1269 }
1270
1271 static ssize_t toshiba_kbd_bl_timeout_show(struct device *dev,
1272                                            struct device_attribute *attr,
1273                                            char *buf)
1274 {
1275         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1276         u32 time;
1277
1278         if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
1279                 return -EIO;
1280
1281         return sprintf(buf, "%i\n", time >> HCI_MISC_SHIFT);
1282 }
1283
1284 static ssize_t toshiba_touchpad_store(struct device *dev,
1285                                       struct device_attribute *attr,
1286                                       const char *buf, size_t count)
1287 {
1288         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1289         int state;
1290
1291         /* Set the TouchPad on/off, 0 - Disable | 1 - Enable */
1292         if (sscanf(buf, "%i", &state) == 1 && (state == 0 || state == 1)) {
1293                 if (toshiba_touchpad_set(toshiba, state) < 0)
1294                         return -EIO;
1295         }
1296
1297         return count;
1298 }
1299
1300 static ssize_t toshiba_touchpad_show(struct device *dev,
1301                                      struct device_attribute *attr, char *buf)
1302 {
1303         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1304         u32 state;
1305         int ret;
1306
1307         ret = toshiba_touchpad_get(toshiba, &state);
1308         if (ret < 0)
1309                 return ret;
1310
1311         return sprintf(buf, "%i\n", state);
1312 }
1313
1314 static ssize_t toshiba_position_show(struct device *dev,
1315                                      struct device_attribute *attr, char *buf)
1316 {
1317         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1318         u32 xyval, zval, tmp;
1319         u16 x, y, z;
1320         int ret;
1321
1322         xyval = zval = 0;
1323         ret = toshiba_accelerometer_get(toshiba, &xyval, &zval);
1324         if (ret < 0)
1325                 return ret;
1326
1327         x = xyval & HCI_ACCEL_MASK;
1328         tmp = xyval >> HCI_MISC_SHIFT;
1329         y = tmp & HCI_ACCEL_MASK;
1330         z = zval & HCI_ACCEL_MASK;
1331
1332         return sprintf(buf, "%d %d %d\n", x, y, z);
1333 }
1334
1335 static DEVICE_ATTR(kbd_backlight_mode, S_IRUGO | S_IWUSR,
1336                    toshiba_kbd_bl_mode_show, toshiba_kbd_bl_mode_store);
1337 static DEVICE_ATTR(kbd_backlight_timeout, S_IRUGO | S_IWUSR,
1338                    toshiba_kbd_bl_timeout_show, toshiba_kbd_bl_timeout_store);
1339 static DEVICE_ATTR(touchpad, S_IRUGO | S_IWUSR,
1340                    toshiba_touchpad_show, toshiba_touchpad_store);
1341 static DEVICE_ATTR(position, S_IRUGO, toshiba_position_show, NULL);
1342
1343 static struct attribute *toshiba_attributes[] = {
1344         &dev_attr_kbd_backlight_mode.attr,
1345         &dev_attr_kbd_backlight_timeout.attr,
1346         &dev_attr_touchpad.attr,
1347         &dev_attr_position.attr,
1348         NULL,
1349 };
1350
1351 static umode_t toshiba_sysfs_is_visible(struct kobject *kobj,
1352                                         struct attribute *attr, int idx)
1353 {
1354         struct device *dev = container_of(kobj, struct device, kobj);
1355         struct toshiba_acpi_dev *drv = dev_get_drvdata(dev);
1356         bool exists = true;
1357
1358         if (attr == &dev_attr_kbd_backlight_mode.attr)
1359                 exists = (drv->kbd_illum_supported) ? true : false;
1360         else if (attr == &dev_attr_kbd_backlight_timeout.attr)
1361                 exists = (drv->kbd_mode == SCI_KBD_MODE_AUTO) ? true : false;
1362         else if (attr == &dev_attr_touchpad.attr)
1363                 exists = (drv->touchpad_supported) ? true : false;
1364         else if (attr == &dev_attr_position.attr)
1365                 exists = (drv->accelerometer_supported) ? true : false;
1366
1367         return exists ? attr->mode : 0;
1368 }
1369
1370 static struct attribute_group toshiba_attr_group = {
1371         .is_visible = toshiba_sysfs_is_visible,
1372         .attrs = toshiba_attributes,
1373 };
1374
1375 static bool toshiba_acpi_i8042_filter(unsigned char data, unsigned char str,
1376                                       struct serio *port)
1377 {
1378         if (str & 0x20)
1379                 return false;
1380
1381         if (unlikely(data == 0xe0))
1382                 return false;
1383
1384         if ((data & 0x7f) == TOS1900_FN_SCAN) {
1385                 schedule_work(&toshiba_acpi->hotkey_work);
1386                 return true;
1387         }
1388
1389         return false;
1390 }
1391
1392 static void toshiba_acpi_hotkey_work(struct work_struct *work)
1393 {
1394         acpi_handle ec_handle = ec_get_handle();
1395         acpi_status status;
1396
1397         if (!ec_handle)
1398                 return;
1399
1400         status = acpi_evaluate_object(ec_handle, "NTFY", NULL, NULL);
1401         if (ACPI_FAILURE(status))
1402                 pr_err("ACPI NTFY method execution failed\n");
1403 }
1404
1405 /*
1406  * Returns hotkey scancode, or < 0 on failure.
1407  */
1408 static int toshiba_acpi_query_hotkey(struct toshiba_acpi_dev *dev)
1409 {
1410         unsigned long long value;
1411         acpi_status status;
1412
1413         status = acpi_evaluate_integer(dev->acpi_dev->handle, "INFO",
1414                                       NULL, &value);
1415         if (ACPI_FAILURE(status)) {
1416                 pr_err("ACPI INFO method execution failed\n");
1417                 return -EIO;
1418         }
1419
1420         return value;
1421 }
1422
1423 static void toshiba_acpi_report_hotkey(struct toshiba_acpi_dev *dev,
1424                                        int scancode)
1425 {
1426         if (scancode == 0x100)
1427                 return;
1428
1429         /* act on key press; ignore key release */
1430         if (scancode & 0x80)
1431                 return;
1432
1433         if (!sparse_keymap_report_event(dev->hotkey_dev, scancode, 1, true))
1434                 pr_info("Unknown key %x\n", scancode);
1435 }
1436
1437 static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
1438 {
1439         acpi_status status;
1440         acpi_handle ec_handle;
1441         int error;
1442         u32 hci_result;
1443
1444         dev->hotkey_dev = input_allocate_device();
1445         if (!dev->hotkey_dev)
1446                 return -ENOMEM;
1447
1448         dev->hotkey_dev->name = "Toshiba input device";
1449         dev->hotkey_dev->phys = "toshiba_acpi/input0";
1450         dev->hotkey_dev->id.bustype = BUS_HOST;
1451
1452         error = sparse_keymap_setup(dev->hotkey_dev, toshiba_acpi_keymap, NULL);
1453         if (error)
1454                 goto err_free_dev;
1455
1456         /*
1457          * For some machines the SCI responsible for providing hotkey
1458          * notification doesn't fire. We can trigger the notification
1459          * whenever the Fn key is pressed using the NTFY method, if
1460          * supported, so if it's present set up an i8042 key filter
1461          * for this purpose.
1462          */
1463         status = AE_ERROR;
1464         ec_handle = ec_get_handle();
1465         if (ec_handle && acpi_has_method(ec_handle, "NTFY")) {
1466                 INIT_WORK(&dev->hotkey_work, toshiba_acpi_hotkey_work);
1467
1468                 error = i8042_install_filter(toshiba_acpi_i8042_filter);
1469                 if (error) {
1470                         pr_err("Error installing key filter\n");
1471                         goto err_free_keymap;
1472                 }
1473
1474                 dev->ntfy_supported = 1;
1475         }
1476
1477         /*
1478          * Determine hotkey query interface. Prefer using the INFO
1479          * method when it is available.
1480          */
1481         if (acpi_has_method(dev->acpi_dev->handle, "INFO"))
1482                 dev->info_supported = 1;
1483         else {
1484                 hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
1485                 if (hci_result == HCI_SUCCESS)
1486                         dev->system_event_supported = 1;
1487         }
1488
1489         if (!dev->info_supported && !dev->system_event_supported) {
1490                 pr_warn("No hotkey query interface found\n");
1491                 goto err_remove_filter;
1492         }
1493
1494         status = acpi_evaluate_object(dev->acpi_dev->handle, "ENAB", NULL, NULL);
1495         if (ACPI_FAILURE(status)) {
1496                 pr_info("Unable to enable hotkeys\n");
1497                 error = -ENODEV;
1498                 goto err_remove_filter;
1499         }
1500
1501         error = input_register_device(dev->hotkey_dev);
1502         if (error) {
1503                 pr_info("Unable to register input device\n");
1504                 goto err_remove_filter;
1505         }
1506
1507         hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &hci_result);
1508         return 0;
1509
1510  err_remove_filter:
1511         if (dev->ntfy_supported)
1512                 i8042_remove_filter(toshiba_acpi_i8042_filter);
1513  err_free_keymap:
1514         sparse_keymap_free(dev->hotkey_dev);
1515  err_free_dev:
1516         input_free_device(dev->hotkey_dev);
1517         dev->hotkey_dev = NULL;
1518         return error;
1519 }
1520
1521 static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
1522 {
1523         struct backlight_properties props;
1524         int brightness;
1525         int ret;
1526         bool enabled;
1527
1528         /*
1529          * Some machines don't support the backlight methods at all, and
1530          * others support it read-only. Either of these is pretty useless,
1531          * so only register the backlight device if the backlight method
1532          * supports both reads and writes.
1533          */
1534         brightness = __get_lcd_brightness(dev);
1535         if (brightness < 0)
1536                 return 0;
1537         ret = set_lcd_brightness(dev, brightness);
1538         if (ret) {
1539                 pr_debug("Backlight method is read-only, disabling backlight support\n");
1540                 return 0;
1541         }
1542
1543         /* Determine whether or not BIOS supports transflective backlight */
1544         ret = get_tr_backlight_status(dev, &enabled);
1545         dev->tr_backlight_supported = !ret;
1546
1547         memset(&props, 0, sizeof(props));
1548         props.type = BACKLIGHT_PLATFORM;
1549         props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
1550
1551         /* adding an extra level and having 0 change to transflective mode */
1552         if (dev->tr_backlight_supported)
1553                 props.max_brightness++;
1554
1555         dev->backlight_dev = backlight_device_register("toshiba",
1556                                                        &dev->acpi_dev->dev,
1557                                                        dev,
1558                                                        &toshiba_backlight_data,
1559                                                        &props);
1560         if (IS_ERR(dev->backlight_dev)) {
1561                 ret = PTR_ERR(dev->backlight_dev);
1562                 pr_err("Could not register toshiba backlight device\n");
1563                 dev->backlight_dev = NULL;
1564                 return ret;
1565         }
1566
1567         dev->backlight_dev->props.brightness = brightness;
1568         return 0;
1569 }
1570
1571 static int toshiba_acpi_remove(struct acpi_device *acpi_dev)
1572 {
1573         struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
1574
1575         remove_toshiba_proc_entries(dev);
1576
1577         if (dev->sysfs_created)
1578                 sysfs_remove_group(&dev->acpi_dev->dev.kobj,
1579                                    &toshiba_attr_group);
1580
1581         if (dev->ntfy_supported) {
1582                 i8042_remove_filter(toshiba_acpi_i8042_filter);
1583                 cancel_work_sync(&dev->hotkey_work);
1584         }
1585
1586         if (dev->hotkey_dev) {
1587                 input_unregister_device(dev->hotkey_dev);
1588                 sparse_keymap_free(dev->hotkey_dev);
1589         }
1590
1591         if (dev->bt_rfk) {
1592                 rfkill_unregister(dev->bt_rfk);
1593                 rfkill_destroy(dev->bt_rfk);
1594         }
1595
1596         if (dev->backlight_dev)
1597                 backlight_device_unregister(dev->backlight_dev);
1598
1599         if (dev->illumination_supported)
1600                 led_classdev_unregister(&dev->led_dev);
1601
1602         if (dev->kbd_led_registered)
1603                 led_classdev_unregister(&dev->kbd_led);
1604
1605         if (dev->eco_supported)
1606                 led_classdev_unregister(&dev->eco_led);
1607
1608         if (toshiba_acpi)
1609                 toshiba_acpi = NULL;
1610
1611         kfree(dev);
1612
1613         return 0;
1614 }
1615
1616 static const char *find_hci_method(acpi_handle handle)
1617 {
1618         if (acpi_has_method(handle, "GHCI"))
1619                 return "GHCI";
1620
1621         if (acpi_has_method(handle, "SPFC"))
1622                 return "SPFC";
1623
1624         return NULL;
1625 }
1626
1627 static int toshiba_acpi_add(struct acpi_device *acpi_dev)
1628 {
1629         struct toshiba_acpi_dev *dev;
1630         const char *hci_method;
1631         u32 dummy;
1632         bool bt_present;
1633         int ret = 0;
1634
1635         if (toshiba_acpi)
1636                 return -EBUSY;
1637
1638         pr_info("Toshiba Laptop ACPI Extras version %s\n",
1639                TOSHIBA_ACPI_VERSION);
1640
1641         hci_method = find_hci_method(acpi_dev->handle);
1642         if (!hci_method) {
1643                 pr_err("HCI interface not found\n");
1644                 return -ENODEV;
1645         }
1646
1647         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1648         if (!dev)
1649                 return -ENOMEM;
1650         dev->acpi_dev = acpi_dev;
1651         dev->method_hci = hci_method;
1652         acpi_dev->driver_data = dev;
1653         dev_set_drvdata(&acpi_dev->dev, dev);
1654
1655         if (toshiba_acpi_setup_keyboard(dev))
1656                 pr_info("Unable to activate hotkeys\n");
1657
1658         mutex_init(&dev->mutex);
1659
1660         ret = toshiba_acpi_setup_backlight(dev);
1661         if (ret)
1662                 goto error;
1663
1664         /* Register rfkill switch for Bluetooth */
1665         if (hci_get_bt_present(dev, &bt_present) == HCI_SUCCESS && bt_present) {
1666                 dev->bt_rfk = rfkill_alloc("Toshiba Bluetooth",
1667                                            &acpi_dev->dev,
1668                                            RFKILL_TYPE_BLUETOOTH,
1669                                            &toshiba_rfk_ops,
1670                                            dev);
1671                 if (!dev->bt_rfk) {
1672                         pr_err("unable to allocate rfkill device\n");
1673                         ret = -ENOMEM;
1674                         goto error;
1675                 }
1676
1677                 ret = rfkill_register(dev->bt_rfk);
1678                 if (ret) {
1679                         pr_err("unable to register rfkill device\n");
1680                         rfkill_destroy(dev->bt_rfk);
1681                         goto error;
1682                 }
1683         }
1684
1685         if (toshiba_illumination_available(dev)) {
1686                 dev->led_dev.name = "toshiba::illumination";
1687                 dev->led_dev.max_brightness = 1;
1688                 dev->led_dev.brightness_set = toshiba_illumination_set;
1689                 dev->led_dev.brightness_get = toshiba_illumination_get;
1690                 if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev))
1691                         dev->illumination_supported = 1;
1692         }
1693
1694         if (toshiba_eco_mode_available(dev)) {
1695                 dev->eco_led.name = "toshiba::eco_mode";
1696                 dev->eco_led.max_brightness = 1;
1697                 dev->eco_led.brightness_set = toshiba_eco_mode_set_status;
1698                 dev->eco_led.brightness_get = toshiba_eco_mode_get_status;
1699                 if (!led_classdev_register(&dev->acpi_dev->dev, &dev->eco_led))
1700                         dev->eco_supported = 1;
1701         }
1702
1703         ret = toshiba_kbd_illum_status_get(dev, &dummy);
1704         if (!ret) {
1705                 dev->kbd_time = dummy >> HCI_MISC_SHIFT;
1706                 dev->kbd_mode = dummy & 0x07;
1707         }
1708         dev->kbd_illum_supported = !ret;
1709         /*
1710          * Only register the LED if KBD illumination is supported
1711          * and the keyboard backlight operation mode is set to FN-Z
1712          */
1713         if (dev->kbd_illum_supported && dev->kbd_mode == SCI_KBD_MODE_FNZ) {
1714                 dev->kbd_led.name = "toshiba::kbd_backlight";
1715                 dev->kbd_led.max_brightness = 1;
1716                 dev->kbd_led.brightness_set = toshiba_kbd_backlight_set;
1717                 dev->kbd_led.brightness_get = toshiba_kbd_backlight_get;
1718                 if (!led_classdev_register(&dev->acpi_dev->dev, &dev->kbd_led))
1719                         dev->kbd_led_registered = 1;
1720         }
1721
1722         ret = toshiba_touchpad_get(dev, &dummy);
1723         dev->touchpad_supported = !ret;
1724
1725         ret = toshiba_accelerometer_supported(dev);
1726         dev->accelerometer_supported = !ret;
1727
1728         /* Determine whether or not BIOS supports fan and video interfaces */
1729
1730         ret = get_video_status(dev, &dummy);
1731         dev->video_supported = !ret;
1732
1733         ret = get_fan_status(dev, &dummy);
1734         dev->fan_supported = !ret;
1735
1736         ret = sysfs_create_group(&dev->acpi_dev->dev.kobj,
1737                                  &toshiba_attr_group);
1738         if (ret) {
1739                 dev->sysfs_created = 0;
1740                 goto error;
1741         }
1742         dev->sysfs_created = !ret;
1743
1744         create_toshiba_proc_entries(dev);
1745
1746         toshiba_acpi = dev;
1747
1748         return 0;
1749
1750 error:
1751         toshiba_acpi_remove(acpi_dev);
1752         return ret;
1753 }
1754
1755 static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
1756 {
1757         struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
1758         u32 hci_result, value;
1759         int retries = 3;
1760         int scancode;
1761
1762         if (event != 0x80)
1763                 return;
1764
1765         if (dev->info_supported) {
1766                 scancode = toshiba_acpi_query_hotkey(dev);
1767                 if (scancode < 0)
1768                         pr_err("Failed to query hotkey event\n");
1769                 else if (scancode != 0)
1770                         toshiba_acpi_report_hotkey(dev, scancode);
1771         } else if (dev->system_event_supported) {
1772                 do {
1773                         hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
1774                         switch (hci_result) {
1775                         case HCI_SUCCESS:
1776                                 toshiba_acpi_report_hotkey(dev, (int)value);
1777                                 break;
1778                         case HCI_NOT_SUPPORTED:
1779                                 /*
1780                                  * This is a workaround for an unresolved
1781                                  * issue on some machines where system events
1782                                  * sporadically become disabled.
1783                                  */
1784                                 hci_write1(dev, HCI_SYSTEM_EVENT, 1,
1785                                            &hci_result);
1786                                 pr_notice("Re-enabled hotkeys\n");
1787                                 /* fall through */
1788                         default:
1789                                 retries--;
1790                                 break;
1791                         }
1792                 } while (retries && hci_result != HCI_EMPTY);
1793         }
1794 }
1795
1796 #ifdef CONFIG_PM_SLEEP
1797 static int toshiba_acpi_suspend(struct device *device)
1798 {
1799         struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
1800         u32 result;
1801
1802         if (dev->hotkey_dev)
1803                 hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_DISABLE, &result);
1804
1805         return 0;
1806 }
1807
1808 static int toshiba_acpi_resume(struct device *device)
1809 {
1810         struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
1811         u32 result;
1812
1813         if (dev->hotkey_dev)
1814                 hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &result);
1815
1816         return 0;
1817 }
1818 #endif
1819
1820 static SIMPLE_DEV_PM_OPS(toshiba_acpi_pm,
1821                          toshiba_acpi_suspend, toshiba_acpi_resume);
1822
1823 static struct acpi_driver toshiba_acpi_driver = {
1824         .name   = "Toshiba ACPI driver",
1825         .owner  = THIS_MODULE,
1826         .ids    = toshiba_device_ids,
1827         .flags  = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1828         .ops    = {
1829                 .add            = toshiba_acpi_add,
1830                 .remove         = toshiba_acpi_remove,
1831                 .notify         = toshiba_acpi_notify,
1832         },
1833         .drv.pm = &toshiba_acpi_pm,
1834 };
1835
1836 static int __init toshiba_acpi_init(void)
1837 {
1838         int ret;
1839
1840         /*
1841          * Machines with this WMI guid aren't supported due to bugs in
1842          * their AML. This check relies on wmi initializing before
1843          * toshiba_acpi to guarantee guids have been identified.
1844          */
1845         if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
1846                 return -ENODEV;
1847
1848         toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
1849         if (!toshiba_proc_dir) {
1850                 pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
1851                 return -ENODEV;
1852         }
1853
1854         ret = acpi_bus_register_driver(&toshiba_acpi_driver);
1855         if (ret) {
1856                 pr_err("Failed to register ACPI driver: %d\n", ret);
1857                 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
1858         }
1859
1860         return ret;
1861 }
1862
1863 static void __exit toshiba_acpi_exit(void)
1864 {
1865         acpi_bus_unregister_driver(&toshiba_acpi_driver);
1866         if (toshiba_proc_dir)
1867                 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
1868 }
1869
1870 module_init(toshiba_acpi_init);
1871 module_exit(toshiba_acpi_exit);