drivers/platform/x86/msi-laptop.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*-*-linux-c-*-*/
   3
   4 /*
   5   Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de>
   6
   7  */
   8
   9 /*
  10  * msi-laptop.c - MSI S270 laptop support. This laptop is sold under
  11  * various brands, including "Cytron/TCM/Medion/Tchibo MD96100".
  12  *
  13  * Driver also supports S271, S420 models.
  14  *
  15  * This driver exports a few files in /sys/devices/platform/msi-laptop-pf/:
  16  *
  17  *   lcd_level - Screen brightness: contains a single integer in the
  18  *   range 0..8. (rw)
  19  *
  20  *   auto_brightness - Enable automatic brightness control: contains
  21  *   either 0 or 1. If set to 1 the hardware adjusts the screen
  22  *   brightness automatically when the power cord is
  23  *   plugged/unplugged. (rw)
  24  *
  25  *   wlan - WLAN subsystem enabled: contains either 0 or 1. (ro)
  26  *
  27  *   bluetooth - Bluetooth subsystem enabled: contains either 0 or 1
  28  *   Please note that this file is constantly 0 if no Bluetooth
  29  *   hardware is available. (ro)
  30  *
  31  * In addition to these platform device attributes the driver
  32  * registers itself in the Linux backlight control subsystem and is
  33  * available to userspace under /sys/class/backlight/msi-laptop-bl/.
  34  *
  35  * This driver might work on other laptops produced by MSI. If you
  36  * want to try it you can pass force=1 as argument to the module which
  37  * will force it to load even when the DMI data doesn't identify the
  38  * laptop as MSI S270. YMMV.
  39  */
  40
  41 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  42
  43 #include <linux/module.h>
  44 #include <linux/kernel.h>
  45 #include <linux/init.h>
  46 #include <linux/acpi.h>
  47 #include <linux/dmi.h>
  48 #include <linux/backlight.h>
  49 #include <linux/platform_device.h>
  50 #include <linux/rfkill.h>
  51 #include <linux/i8042.h>
  52 #include <linux/input.h>
  53 #include <linux/input/sparse-keymap.h>
  54 #include <acpi/video.h>
  55
  56 #define MSI_LCD_LEVEL_MAX 9
  57
  58 #define MSI_EC_COMMAND_WIRELESS 0x10
  59 #define MSI_EC_COMMAND_LCD_LEVEL 0x11
  60
  61 #define MSI_STANDARD_EC_COMMAND_ADDRESS 0x2e
  62 #define MSI_STANDARD_EC_BLUETOOTH_MASK  (1 << 0)
  63 #define MSI_STANDARD_EC_WEBCAM_MASK     (1 << 1)
  64 #define MSI_STANDARD_EC_WLAN_MASK       (1 << 3)
  65 #define MSI_STANDARD_EC_3G_MASK         (1 << 4)
  66
  67 /* For set SCM load flag to disable BIOS fn key */
  68 #define MSI_STANDARD_EC_SCM_LOAD_ADDRESS        0x2d
  69 #define MSI_STANDARD_EC_SCM_LOAD_MASK           (1 << 0)
  70
  71 #define MSI_STANDARD_EC_FUNCTIONS_ADDRESS       0xe4
  72 /* Power LED is orange - Turbo mode */
  73 #define MSI_STANDARD_EC_TURBO_MASK              (1 << 1)
  74 /* Power LED is green - ECO mode */
  75 #define MSI_STANDARD_EC_ECO_MASK                (1 << 3)
  76 /* Touchpad is turned on */
  77 #define MSI_STANDARD_EC_TOUCHPAD_MASK           (1 << 4)
  78 /* If this bit != bit 1, turbo mode can't be toggled */
  79 #define MSI_STANDARD_EC_TURBO_COOLDOWN_MASK     (1 << 7)
  80
  81 #define MSI_STANDARD_EC_FAN_ADDRESS             0x33
  82 /* If zero, fan rotates at maximal speed */
  83 #define MSI_STANDARD_EC_AUTOFAN_MASK            (1 << 0)
  84
  85 #ifdef CONFIG_PM_SLEEP
  86 static int msi_laptop_resume(struct device *device);
  87 #endif
  88 static SIMPLE_DEV_PM_OPS(msi_laptop_pm, NULL, msi_laptop_resume);
  89
  90 #define MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS  0x2f
  91
  92 static bool force;
  93 module_param(force, bool, 0);
  94 MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
  95
  96 static int auto_brightness;
  97 module_param(auto_brightness, int, 0);
  98 MODULE_PARM_DESC(auto_brightness, "Enable automatic brightness control (0: disabled; 1: enabled; 2: don't touch)");
  99
 100 static const struct key_entry msi_laptop_keymap[] = {
 101         {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },  /* Touch Pad On */
 102         {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },/* Touch Pad On */
 103         {KE_END, 0}
 104 };
 105
 106 static struct input_dev *msi_laptop_input_dev;
 107
 108 static int wlan_s, bluetooth_s, threeg_s;
 109 static int threeg_exists;
 110 static struct rfkill *rfk_wlan, *rfk_bluetooth, *rfk_threeg;
 111
 112 /* MSI laptop quirks */
 113 struct quirk_entry {
 114         bool old_ec_model;
 115
 116         /* Some MSI 3G netbook only have one fn key to control
 117          * Wlan/Bluetooth/3G, those netbook will load the SCM (windows app) to
 118          * disable the original Wlan/Bluetooth control by BIOS when user press
 119          * fn key, then control Wlan/Bluetooth/3G by SCM (software control by
 120          * OS). Without SCM, user cann't on/off 3G module on those 3G netbook.
 121          * On Linux, msi-laptop driver will do the same thing to disable the
 122          * original BIOS control, then might need use HAL or other userland
 123          * application to do the software control that simulate with SCM.
 124          * e.g. MSI N034 netbook
 125          */
 126         bool load_scm_model;
 127
 128         /* Some MSI laptops need delay before reading from EC */
 129         bool ec_delay;
 130
 131         /* Some MSI Wind netbooks (e.g. MSI Wind U100) need loading SCM to get
 132          * some features working (e.g. ECO mode), but we cannot change
 133          * Wlan/Bluetooth state in software and we can only read its state.
 134          */
 135         bool ec_read_only;
 136 };
 137
 138 static struct quirk_entry *quirks;
 139
 140 /* Hardware access */
 141
 142 static int set_lcd_level(int level)
 143 {
 144         u8 buf[2];
 145
 146         if (level < 0 || level >= MSI_LCD_LEVEL_MAX)
 147                 return -EINVAL;
 148
 149         buf[0] = 0x80;
 150         buf[1] = (u8) (level*31);
 151
 152         return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, buf, sizeof(buf),
 153                               NULL, 0);
 154 }
 155
 156 static int get_lcd_level(void)
 157 {
 158         u8 wdata = 0, rdata;
 159         int result;
 160
 161         result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1,
 162                                 &rdata, 1);
 163         if (result < 0)
 164                 return result;
 165
 166         return (int) rdata / 31;
 167 }
 168
 169 static int get_auto_brightness(void)
 170 {
 171         u8 wdata = 4, rdata;
 172         int result;
 173
 174         result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1,
 175                                 &rdata, 1);
 176         if (result < 0)
 177                 return result;
 178
 179         return !!(rdata & 8);
 180 }
 181
 182 static int set_auto_brightness(int enable)
 183 {
 184         u8 wdata[2], rdata;
 185         int result;
 186
 187         wdata[0] = 4;
 188
 189         result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 1,
 190                                 &rdata, 1);
 191         if (result < 0)
 192                 return result;
 193
 194         wdata[0] = 0x84;
 195         wdata[1] = (rdata & 0xF7) | (enable ? 8 : 0);
 196
 197         return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 2,
 198                               NULL, 0);
 199 }
 200
 201 static ssize_t set_device_state(const char *buf, size_t count, u8 mask)
 202 {
 203         int status;
 204         u8 wdata = 0, rdata;
 205         int result;
 206
 207         if (sscanf(buf, "%i", &status) != 1 || (status < 0 || status > 1))
 208                 return -EINVAL;
 209
 210         if (quirks->ec_read_only)
 211                 return 0;
 212
 213         /* read current device state */
 214         result = ec_read(MSI_STANDARD_EC_COMMAND_ADDRESS, &rdata);
 215         if (result < 0)
 216                 return result;
 217
 218         if (!!(rdata & mask) != status) {
 219                 /* reverse device bit */
 220                 if (rdata & mask)
 221                         wdata = rdata & ~mask;
 222                 else
 223                         wdata = rdata | mask;
 224
 225                 result = ec_write(MSI_STANDARD_EC_COMMAND_ADDRESS, wdata);
 226                 if (result < 0)
 227                         return result;
 228         }
 229
 230         return count;
 231 }
 232
 233 static int get_wireless_state(int *wlan, int *bluetooth)
 234 {
 235         u8 wdata = 0, rdata;
 236         int result;
 237
 238         result = ec_transaction(MSI_EC_COMMAND_WIRELESS, &wdata, 1, &rdata, 1);
 239         if (result < 0)
 240                 return result;
 241
 242         if (wlan)
 243                 *wlan = !!(rdata & 8);
 244
 245         if (bluetooth)
 246                 *bluetooth = !!(rdata & 128);
 247
 248         return 0;
 249 }
 250
 251 static int get_wireless_state_ec_standard(void)
 252 {
 253         u8 rdata;
 254         int result;
 255
 256         result = ec_read(MSI_STANDARD_EC_COMMAND_ADDRESS, &rdata);
 257         if (result < 0)
 258                 return result;
 259
 260         wlan_s = !!(rdata & MSI_STANDARD_EC_WLAN_MASK);
 261
 262         bluetooth_s = !!(rdata & MSI_STANDARD_EC_BLUETOOTH_MASK);
 263
 264         threeg_s = !!(rdata & MSI_STANDARD_EC_3G_MASK);
 265
 266         return 0;
 267 }
 268
 269 static int get_threeg_exists(void)
 270 {
 271         u8 rdata;
 272         int result;
 273
 274         result = ec_read(MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS, &rdata);
 275         if (result < 0)
 276                 return result;
 277
 278         threeg_exists = !!(rdata & MSI_STANDARD_EC_3G_MASK);
 279
 280         return 0;
 281 }
 282
 283 /* Backlight device stuff */
 284
 285 static int bl_get_brightness(struct backlight_device *b)
 286 {
 287         return get_lcd_level();
 288 }
 289
 290
 291 static int bl_update_status(struct backlight_device *b)
 292 {
 293         return set_lcd_level(b->props.brightness);
 294 }
 295
 296 static const struct backlight_ops msibl_ops = {
 297         .get_brightness = bl_get_brightness,
 298         .update_status  = bl_update_status,
 299 };
 300
 301 static struct backlight_device *msibl_device;
 302
 303 /* Platform device */
 304
 305 static ssize_t show_wlan(struct device *dev,
 306         struct device_attribute *attr, char *buf)
 307 {
 308
 309         int ret, enabled = 0;
 310
 311         if (quirks->old_ec_model) {
 312                 ret = get_wireless_state(&enabled, NULL);
 313         } else {
 314                 ret = get_wireless_state_ec_standard();
 315                 enabled = wlan_s;
 316         }
 317         if (ret < 0)
 318                 return ret;
 319
 320         return sysfs_emit(buf, "%i\n", enabled);
 321 }
 322
 323 static ssize_t store_wlan(struct device *dev,
 324         struct device_attribute *attr, const char *buf, size_t count)
 325 {
 326         return set_device_state(buf, count, MSI_STANDARD_EC_WLAN_MASK);
 327 }
 328
 329 static ssize_t show_bluetooth(struct device *dev,
 330         struct device_attribute *attr, char *buf)
 331 {
 332
 333         int ret, enabled = 0;
 334
 335         if (quirks->old_ec_model) {
 336                 ret = get_wireless_state(NULL, &enabled);
 337         } else {
 338                 ret = get_wireless_state_ec_standard();
 339                 enabled = bluetooth_s;
 340         }
 341         if (ret < 0)
 342                 return ret;
 343
 344         return sysfs_emit(buf, "%i\n", enabled);
 345 }
 346
 347 static ssize_t store_bluetooth(struct device *dev,
 348         struct device_attribute *attr, const char *buf, size_t count)
 349 {
 350         return set_device_state(buf, count, MSI_STANDARD_EC_BLUETOOTH_MASK);
 351 }
 352
 353 static ssize_t show_threeg(struct device *dev,
 354         struct device_attribute *attr, char *buf)
 355 {
 356
 357         int ret;
 358
 359         /* old msi ec not support 3G */
 360         if (quirks->old_ec_model)
 361                 return -ENODEV;
 362
 363         ret = get_wireless_state_ec_standard();
 364         if (ret < 0)
 365                 return ret;
 366
 367         return sysfs_emit(buf, "%i\n", threeg_s);
 368 }
 369
 370 static ssize_t store_threeg(struct device *dev,
 371         struct device_attribute *attr, const char *buf, size_t count)
 372 {
 373         return set_device_state(buf, count, MSI_STANDARD_EC_3G_MASK);
 374 }
 375
 376 static ssize_t show_lcd_level(struct device *dev,
 377         struct device_attribute *attr, char *buf)
 378 {
 379
 380         int ret;
 381
 382         ret = get_lcd_level();
 383         if (ret < 0)
 384                 return ret;
 385
 386         return sysfs_emit(buf, "%i\n", ret);
 387 }
 388
 389 static ssize_t store_lcd_level(struct device *dev,
 390         struct device_attribute *attr, const char *buf, size_t count)
 391 {
 392
 393         int level, ret;
 394
 395         if (sscanf(buf, "%i", &level) != 1 ||
 396             (level < 0 || level >= MSI_LCD_LEVEL_MAX))
 397                 return -EINVAL;
 398
 399         ret = set_lcd_level(level);
 400         if (ret < 0)
 401                 return ret;
 402
 403         return count;
 404 }
 405
 406 static ssize_t show_auto_brightness(struct device *dev,
 407         struct device_attribute *attr, char *buf)
 408 {
 409
 410         int ret;
 411
 412         ret = get_auto_brightness();
 413         if (ret < 0)
 414                 return ret;
 415
 416         return sysfs_emit(buf, "%i\n", ret);
 417 }
 418
 419 static ssize_t store_auto_brightness(struct device *dev,
 420         struct device_attribute *attr, const char *buf, size_t count)
 421 {
 422
 423         int enable, ret;
 424
 425         if (sscanf(buf, "%i", &enable) != 1 || (enable != (enable & 1)))
 426                 return -EINVAL;
 427
 428         ret = set_auto_brightness(enable);
 429         if (ret < 0)
 430                 return ret;
 431
 432         return count;
 433 }
 434
 435 static ssize_t show_touchpad(struct device *dev,
 436         struct device_attribute *attr, char *buf)
 437 {
 438
 439         u8 rdata;
 440         int result;
 441
 442         result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
 443         if (result < 0)
 444                 return result;
 445
 446         return sysfs_emit(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_TOUCHPAD_MASK));
 447 }
 448
 449 static ssize_t show_turbo(struct device *dev,
 450         struct device_attribute *attr, char *buf)
 451 {
 452
 453         u8 rdata;
 454         int result;
 455
 456         result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
 457         if (result < 0)
 458                 return result;
 459
 460         return sysfs_emit(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_TURBO_MASK));
 461 }
 462
 463 static ssize_t show_eco(struct device *dev,
 464         struct device_attribute *attr, char *buf)
 465 {
 466
 467         u8 rdata;
 468         int result;
 469
 470         result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
 471         if (result < 0)
 472                 return result;
 473
 474         return sysfs_emit(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_ECO_MASK));
 475 }
 476
 477 static ssize_t show_turbo_cooldown(struct device *dev,
 478         struct device_attribute *attr, char *buf)
 479 {
 480
 481         u8 rdata;
 482         int result;
 483
 484         result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
 485         if (result < 0)
 486                 return result;
 487
 488         return sysfs_emit(buf, "%i\n", (!!(rdata & MSI_STANDARD_EC_TURBO_MASK)) |
 489                 (!!(rdata & MSI_STANDARD_EC_TURBO_COOLDOWN_MASK) << 1));
 490 }
 491
 492 static ssize_t show_auto_fan(struct device *dev,
 493         struct device_attribute *attr, char *buf)
 494 {
 495
 496         u8 rdata;
 497         int result;
 498
 499         result = ec_read(MSI_STANDARD_EC_FAN_ADDRESS, &rdata);
 500         if (result < 0)
 501                 return result;
 502
 503         return sysfs_emit(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_AUTOFAN_MASK));
 504 }
 505
 506 static ssize_t store_auto_fan(struct device *dev,
 507         struct device_attribute *attr, const char *buf, size_t count)
 508 {
 509
 510         int enable, result;
 511
 512         if (sscanf(buf, "%i", &enable) != 1 || (enable != (enable & 1)))
 513                 return -EINVAL;
 514
 515         result = ec_write(MSI_STANDARD_EC_FAN_ADDRESS, enable);
 516         if (result < 0)
 517                 return result;
 518
 519         return count;
 520 }
 521
 522 static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
 523 static DEVICE_ATTR(auto_brightness, 0644, show_auto_brightness,
 524                    store_auto_brightness);
 525 static DEVICE_ATTR(bluetooth, 0444, show_bluetooth, NULL);
 526 static DEVICE_ATTR(wlan, 0444, show_wlan, NULL);
 527 static DEVICE_ATTR(threeg, 0444, show_threeg, NULL);
 528 static DEVICE_ATTR(touchpad, 0444, show_touchpad, NULL);
 529 static DEVICE_ATTR(turbo_mode, 0444, show_turbo, NULL);
 530 static DEVICE_ATTR(eco_mode, 0444, show_eco, NULL);
 531 static DEVICE_ATTR(turbo_cooldown, 0444, show_turbo_cooldown, NULL);
 532 static DEVICE_ATTR(auto_fan, 0644, show_auto_fan, store_auto_fan);
 533
 534 static struct attribute *msipf_attributes[] = {
 535         &dev_attr_bluetooth.attr,
 536         &dev_attr_wlan.attr,
 537         &dev_attr_touchpad.attr,
 538         &dev_attr_turbo_mode.attr,
 539         &dev_attr_eco_mode.attr,
 540         &dev_attr_turbo_cooldown.attr,
 541         &dev_attr_auto_fan.attr,
 542         NULL
 543 };
 544
 545 static struct attribute *msipf_old_attributes[] = {
 546         &dev_attr_lcd_level.attr,
 547         &dev_attr_auto_brightness.attr,
 548         NULL
 549 };
 550
 551 static const struct attribute_group msipf_attribute_group = {
 552         .attrs = msipf_attributes
 553 };
 554
 555 static const struct attribute_group msipf_old_attribute_group = {
 556         .attrs = msipf_old_attributes
 557 };
 558
 559 static struct platform_driver msipf_driver = {
 560         .driver = {
 561                 .name = "msi-laptop-pf",
 562                 .pm = &msi_laptop_pm,
 563         },
 564 };
 565
 566 static struct platform_device *msipf_device;
 567
 568 /* Initialization */
 569
 570 static struct quirk_entry quirk_old_ec_model = {
 571         .old_ec_model = true,
 572 };
 573
 574 static struct quirk_entry quirk_load_scm_model = {
 575         .load_scm_model = true,
 576         .ec_delay = true,
 577 };
 578
 579 static struct quirk_entry quirk_load_scm_ro_model = {
 580         .load_scm_model = true,
 581         .ec_read_only = true,
 582 };
 583
 584 static int dmi_check_cb(const struct dmi_system_id *dmi)
 585 {
 586         pr_info("Identified laptop model '%s'\n", dmi->ident);
 587
 588         quirks = dmi->driver_data;
 589
 590         return 1;
 591 }
 592
 593 static unsigned long msi_work_delay(int msecs)
 594 {
 595         if (quirks->ec_delay)
 596                 return msecs_to_jiffies(msecs);
 597
 598         return 0;
 599 }
 600
 601 static const struct dmi_system_id msi_dmi_table[] __initconst = {
 602         {
 603                 .ident = "MSI S270",
 604                 .matches = {
 605                         DMI_MATCH(DMI_SYS_VENDOR, "MICRO-STAR INT"),
 606                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-1013"),
 607                         DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
 608                         DMI_MATCH(DMI_CHASSIS_VENDOR, "MICRO-STAR INT")
 609                 },
 610                 .driver_data = &quirk_old_ec_model,
 611                 .callback = dmi_check_cb
 612         },
 613         {
 614                 .ident = "MSI S271",
 615                 .matches = {
 616                         DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
 617                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-1058"),
 618                         DMI_MATCH(DMI_PRODUCT_VERSION, "0581"),
 619                         DMI_MATCH(DMI_BOARD_NAME, "MS-1058")
 620                 },
 621                 .driver_data = &quirk_old_ec_model,
 622                 .callback = dmi_check_cb
 623         },
 624         {
 625                 .ident = "MSI S420",
 626                 .matches = {
 627                         DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
 628                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-1412"),
 629                         DMI_MATCH(DMI_BOARD_VENDOR, "MSI"),
 630                         DMI_MATCH(DMI_BOARD_NAME, "MS-1412")
 631                 },
 632                 .driver_data = &quirk_old_ec_model,
 633                 .callback = dmi_check_cb
 634         },
 635         {
 636                 .ident = "Medion MD96100",
 637                 .matches = {
 638                         DMI_MATCH(DMI_SYS_VENDOR, "NOTEBOOK"),
 639                         DMI_MATCH(DMI_PRODUCT_NAME, "SAM2000"),
 640                         DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
 641                         DMI_MATCH(DMI_CHASSIS_VENDOR, "MICRO-STAR INT")
 642                 },
 643                 .driver_data = &quirk_old_ec_model,
 644                 .callback = dmi_check_cb
 645         },
 646         {
 647                 .ident = "MSI N034",
 648                 .matches = {
 649                         DMI_MATCH(DMI_SYS_VENDOR,
 650                                 "MICRO-STAR INTERNATIONAL CO., LTD"),
 651                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-N034"),
 652                         DMI_MATCH(DMI_CHASSIS_VENDOR,
 653                         "MICRO-STAR INTERNATIONAL CO., LTD")
 654                 },
 655                 .driver_data = &quirk_load_scm_model,
 656                 .callback = dmi_check_cb
 657         },
 658         {
 659                 .ident = "MSI N051",
 660                 .matches = {
 661                         DMI_MATCH(DMI_SYS_VENDOR,
 662                                 "MICRO-STAR INTERNATIONAL CO., LTD"),
 663                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-N051"),
 664                         DMI_MATCH(DMI_CHASSIS_VENDOR,
 665                         "MICRO-STAR INTERNATIONAL CO., LTD")
 666                 },
 667                 .driver_data = &quirk_load_scm_model,
 668                 .callback = dmi_check_cb
 669         },
 670         {
 671                 .ident = "MSI N014",
 672                 .matches = {
 673                         DMI_MATCH(DMI_SYS_VENDOR,
 674                                 "MICRO-STAR INTERNATIONAL CO., LTD"),
 675                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-N014"),
 676                 },
 677                 .driver_data = &quirk_load_scm_model,
 678                 .callback = dmi_check_cb
 679         },
 680         {
 681                 .ident = "MSI CR620",
 682                 .matches = {
 683                         DMI_MATCH(DMI_SYS_VENDOR,
 684                                 "Micro-Star International"),
 685                         DMI_MATCH(DMI_PRODUCT_NAME, "CR620"),
 686                 },
 687                 .driver_data = &quirk_load_scm_model,
 688                 .callback = dmi_check_cb
 689         },
 690         {
 691                 .ident = "MSI U270",
 692                 .matches = {
 693                         DMI_MATCH(DMI_SYS_VENDOR,
 694                                 "Micro-Star International Co., Ltd."),
 695                         DMI_MATCH(DMI_PRODUCT_NAME, "U270 series"),
 696                 },
 697                 .driver_data = &quirk_load_scm_model,
 698                 .callback = dmi_check_cb
 699         },
 700         {
 701                 .ident = "MSI U90/U100",
 702                 .matches = {
 703                         DMI_MATCH(DMI_SYS_VENDOR,
 704                                 "MICRO-STAR INTERNATIONAL CO., LTD"),
 705                         DMI_MATCH(DMI_PRODUCT_NAME, "U90/U100"),
 706                 },
 707                 .driver_data = &quirk_load_scm_ro_model,
 708                 .callback = dmi_check_cb
 709         },
 710         { }
 711 };
 712 MODULE_DEVICE_TABLE(dmi, msi_dmi_table);
 713
 714 static int rfkill_bluetooth_set(void *data, bool blocked)
 715 {
 716         /* Do something with blocked...*/
 717         /*
 718          * blocked == false is on
 719          * blocked == true is off
 720          */
 721         int result = set_device_state(blocked ? "0" : "1", 0,
 722                         MSI_STANDARD_EC_BLUETOOTH_MASK);
 723
 724         return min(result, 0);
 725 }
 726
 727 static int rfkill_wlan_set(void *data, bool blocked)
 728 {
 729         int result = set_device_state(blocked ? "0" : "1", 0,
 730                         MSI_STANDARD_EC_WLAN_MASK);
 731
 732         return min(result, 0);
 733 }
 734
 735 static int rfkill_threeg_set(void *data, bool blocked)
 736 {
 737         int result = set_device_state(blocked ? "0" : "1", 0,
 738                         MSI_STANDARD_EC_3G_MASK);
 739
 740         return min(result, 0);
 741 }
 742
 743 static const struct rfkill_ops rfkill_bluetooth_ops = {
 744         .set_block = rfkill_bluetooth_set
 745 };
 746
 747 static const struct rfkill_ops rfkill_wlan_ops = {
 748         .set_block = rfkill_wlan_set
 749 };
 750
 751 static const struct rfkill_ops rfkill_threeg_ops = {
 752         .set_block = rfkill_threeg_set
 753 };
 754
 755 static void rfkill_cleanup(void)
 756 {
 757         if (rfk_bluetooth) {
 758                 rfkill_unregister(rfk_bluetooth);
 759                 rfkill_destroy(rfk_bluetooth);
 760         }
 761
 762         if (rfk_threeg) {
 763                 rfkill_unregister(rfk_threeg);
 764                 rfkill_destroy(rfk_threeg);
 765         }
 766
 767         if (rfk_wlan) {
 768                 rfkill_unregister(rfk_wlan);
 769                 rfkill_destroy(rfk_wlan);
 770         }
 771 }
 772
 773 static bool msi_rfkill_set_state(struct rfkill *rfkill, bool blocked)
 774 {
 775         if (quirks->ec_read_only)
 776                 return rfkill_set_hw_state(rfkill, blocked);
 777         else
 778                 return rfkill_set_sw_state(rfkill, blocked);
 779 }
 780
 781 static void msi_update_rfkill(struct work_struct *ignored)
 782 {
 783         get_wireless_state_ec_standard();
 784
 785         if (rfk_wlan)
 786                 msi_rfkill_set_state(rfk_wlan, !wlan_s);
 787         if (rfk_bluetooth)
 788                 msi_rfkill_set_state(rfk_bluetooth, !bluetooth_s);
 789         if (rfk_threeg)
 790                 msi_rfkill_set_state(rfk_threeg, !threeg_s);
 791 }
 792 static DECLARE_DELAYED_WORK(msi_rfkill_dwork, msi_update_rfkill);
 793
 794 static void msi_send_touchpad_key(struct work_struct *ignored)
 795 {
 796         u8 rdata;
 797         int result;
 798
 799         result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
 800         if (result < 0)
 801                 return;
 802
 803         sparse_keymap_report_event(msi_laptop_input_dev,
 804                 (rdata & MSI_STANDARD_EC_TOUCHPAD_MASK) ?
 805                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF, 1, true);
 806 }
 807 static DECLARE_DELAYED_WORK(msi_touchpad_dwork, msi_send_touchpad_key);
 808
 809 static bool msi_laptop_i8042_filter(unsigned char data, unsigned char str,
 810                                 struct serio *port)
 811 {
 812         static bool extended;
 813
 814         if (str & I8042_STR_AUXDATA)
 815                 return false;
 816
 817         /* 0x54 wwan, 0x62 bluetooth, 0x76 wlan, 0xE4 touchpad toggle*/
 818         if (unlikely(data == 0xe0)) {
 819                 extended = true;
 820                 return false;
 821         } else if (unlikely(extended)) {
 822                 extended = false;
 823                 switch (data) {
 824                 case 0xE4:
 825                         schedule_delayed_work(&msi_touchpad_dwork, msi_work_delay(500));
 826                         break;
 827                 case 0x54:
 828                 case 0x62:
 829                 case 0x76:
 830                         schedule_delayed_work(&msi_rfkill_dwork, msi_work_delay(500));
 831                         break;
 832                 }
 833         }
 834
 835         return false;
 836 }
 837
 838 static void msi_init_rfkill(struct work_struct *ignored)
 839 {
 840         if (rfk_wlan) {
 841                 msi_rfkill_set_state(rfk_wlan, !wlan_s);
 842                 rfkill_wlan_set(NULL, !wlan_s);
 843         }
 844         if (rfk_bluetooth) {
 845                 msi_rfkill_set_state(rfk_bluetooth, !bluetooth_s);
 846                 rfkill_bluetooth_set(NULL, !bluetooth_s);
 847         }
 848         if (rfk_threeg) {
 849                 msi_rfkill_set_state(rfk_threeg, !threeg_s);
 850                 rfkill_threeg_set(NULL, !threeg_s);
 851         }
 852 }
 853 static DECLARE_DELAYED_WORK(msi_rfkill_init, msi_init_rfkill);
 854
 855 static int rfkill_init(struct platform_device *sdev)
 856 {
 857         /* add rfkill */
 858         int retval;
 859
 860         /* keep the hardware wireless state */
 861         get_wireless_state_ec_standard();
 862
 863         rfk_bluetooth = rfkill_alloc("msi-bluetooth", &sdev->dev,
 864                                 RFKILL_TYPE_BLUETOOTH,
 865                                 &rfkill_bluetooth_ops, NULL);
 866         if (!rfk_bluetooth) {
 867                 retval = -ENOMEM;
 868                 goto err_bluetooth;
 869         }
 870         retval = rfkill_register(rfk_bluetooth);
 871         if (retval)
 872                 goto err_bluetooth;
 873
 874         rfk_wlan = rfkill_alloc("msi-wlan", &sdev->dev, RFKILL_TYPE_WLAN,
 875                                 &rfkill_wlan_ops, NULL);
 876         if (!rfk_wlan) {
 877                 retval = -ENOMEM;
 878                 goto err_wlan;
 879         }
 880         retval = rfkill_register(rfk_wlan);
 881         if (retval)
 882                 goto err_wlan;
 883
 884         if (threeg_exists) {
 885                 rfk_threeg = rfkill_alloc("msi-threeg", &sdev->dev,
 886                                 RFKILL_TYPE_WWAN, &rfkill_threeg_ops, NULL);
 887                 if (!rfk_threeg) {
 888                         retval = -ENOMEM;
 889                         goto err_threeg;
 890                 }
 891                 retval = rfkill_register(rfk_threeg);
 892                 if (retval)
 893                         goto err_threeg;
 894         }
 895
 896         /* schedule to run rfkill state initial */
 897         schedule_delayed_work(&msi_rfkill_init, msi_work_delay(1000));
 898         return 0;
 899
 900 err_threeg:
 901         rfkill_destroy(rfk_threeg);
 902         if (rfk_wlan)
 903                 rfkill_unregister(rfk_wlan);
 904 err_wlan:
 905         rfkill_destroy(rfk_wlan);
 906         if (rfk_bluetooth)
 907                 rfkill_unregister(rfk_bluetooth);
 908 err_bluetooth:
 909         rfkill_destroy(rfk_bluetooth);
 910
 911         return retval;
 912 }
 913
 914 static int msi_scm_disable_hw_fn_handling(void)
 915 {
 916         u8 data;
 917         int result;
 918
 919         if (!quirks->load_scm_model)
 920                 return 0;
 921
 922         /* set load SCM to disable hardware control by fn key */
 923         result = ec_read(MSI_STANDARD_EC_SCM_LOAD_ADDRESS, &data);
 924         if (result < 0)
 925                 return result;
 926
 927         result = ec_write(MSI_STANDARD_EC_SCM_LOAD_ADDRESS,
 928                 data | MSI_STANDARD_EC_SCM_LOAD_MASK);
 929         if (result < 0)
 930                 return result;
 931
 932         return 0;
 933 }
 934
 935 #ifdef CONFIG_PM_SLEEP
 936 static int msi_laptop_resume(struct device *device)
 937 {
 938         return msi_scm_disable_hw_fn_handling();
 939 }
 940 #endif
 941
 942 static int __init msi_laptop_input_setup(void)
 943 {
 944         int err;
 945
 946         msi_laptop_input_dev = input_allocate_device();
 947         if (!msi_laptop_input_dev)
 948                 return -ENOMEM;
 949
 950         msi_laptop_input_dev->name = "MSI Laptop hotkeys";
 951         msi_laptop_input_dev->phys = "msi-laptop/input0";
 952         msi_laptop_input_dev->id.bustype = BUS_HOST;
 953
 954         err = sparse_keymap_setup(msi_laptop_input_dev,
 955                 msi_laptop_keymap, NULL);
 956         if (err)
 957                 goto err_free_dev;
 958
 959         err = input_register_device(msi_laptop_input_dev);
 960         if (err)
 961                 goto err_free_dev;
 962
 963         return 0;
 964
 965 err_free_dev:
 966         input_free_device(msi_laptop_input_dev);
 967         return err;
 968 }
 969
 970 static int __init load_scm_model_init(struct platform_device *sdev)
 971 {
 972         int result;
 973
 974         if (!quirks->ec_read_only) {
 975                 /* allow userland write sysfs file  */
 976                 dev_attr_bluetooth.store = store_bluetooth;
 977                 dev_attr_wlan.store = store_wlan;
 978                 dev_attr_threeg.store = store_threeg;
 979                 dev_attr_bluetooth.attr.mode |= S_IWUSR;
 980                 dev_attr_wlan.attr.mode |= S_IWUSR;
 981                 dev_attr_threeg.attr.mode |= S_IWUSR;
 982         }
 983
 984         /* disable hardware control by fn key */
 985         result = msi_scm_disable_hw_fn_handling();
 986         if (result < 0)
 987                 return result;
 988
 989         /* initial rfkill */
 990         result = rfkill_init(sdev);
 991         if (result < 0)
 992                 goto fail_rfkill;
 993
 994         /* setup input device */
 995         result = msi_laptop_input_setup();
 996         if (result)
 997                 goto fail_input;
 998
 999         result = i8042_install_filter(msi_laptop_i8042_filter);
1000         if (result) {
1001                 pr_err("Unable to install key filter\n");
1002                 goto fail_filter;
1003         }
1004
1005         return 0;
1006
1007 fail_filter:
1008         input_unregister_device(msi_laptop_input_dev);
1009
1010 fail_input:
1011         rfkill_cleanup();
1012
1013 fail_rfkill:
1014         return result;
1015 }
1016
1017 static void msi_scm_model_exit(void)
1018 {
1019         if (!quirks->load_scm_model)
1020                 return;
1021
1022         i8042_remove_filter(msi_laptop_i8042_filter);
1023         cancel_delayed_work_sync(&msi_touchpad_dwork);
1024         input_unregister_device(msi_laptop_input_dev);
1025         cancel_delayed_work_sync(&msi_rfkill_dwork);
1026         rfkill_cleanup();
1027 }
1028
1029 static int __init msi_init(void)
1030 {
1031         int ret;
1032
1033         if (acpi_disabled)
1034                 return -ENODEV;
1035
1036         dmi_check_system(msi_dmi_table);
1037         if (!quirks)
1038                 /* quirks may be NULL if no match in DMI table */
1039                 quirks = &quirk_load_scm_model;
1040         if (force)
1041                 quirks = &quirk_old_ec_model;
1042
1043         if (!quirks->old_ec_model)
1044                 get_threeg_exists();
1045
1046         if (auto_brightness < 0 || auto_brightness > 2)
1047                 return -EINVAL;
1048
1049         /* Register backlight stuff */
1050         if (quirks->old_ec_model &&
1051             acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1052                 struct backlight_properties props;
1053                 memset(&props, 0, sizeof(struct backlight_properties));
1054                 props.type = BACKLIGHT_PLATFORM;
1055                 props.max_brightness = MSI_LCD_LEVEL_MAX - 1;
1056                 msibl_device = backlight_device_register("msi-laptop-bl", NULL,
1057                                                          NULL, &msibl_ops,
1058                                                          &props);
1059                 if (IS_ERR(msibl_device))
1060                         return PTR_ERR(msibl_device);
1061         }
1062
1063         ret = platform_driver_register(&msipf_driver);
1064         if (ret)
1065                 goto fail_backlight;
1066
1067         /* Register platform stuff */
1068
1069         msipf_device = platform_device_alloc("msi-laptop-pf", PLATFORM_DEVID_NONE);
1070         if (!msipf_device) {
1071                 ret = -ENOMEM;
1072                 goto fail_platform_driver;
1073         }
1074
1075         ret = platform_device_add(msipf_device);
1076         if (ret)
1077                 goto fail_device_add;
1078
1079         if (quirks->load_scm_model && (load_scm_model_init(msipf_device) < 0)) {
1080                 ret = -EINVAL;
1081                 goto fail_scm_model_init;
1082         }
1083
1084         ret = sysfs_create_group(&msipf_device->dev.kobj,
1085                                  &msipf_attribute_group);
1086         if (ret)
1087                 goto fail_create_group;
1088
1089         if (!quirks->old_ec_model) {
1090                 if (threeg_exists)
1091                         ret = device_create_file(&msipf_device->dev,
1092                                                 &dev_attr_threeg);
1093                 if (ret)
1094                         goto fail_create_attr;
1095         } else {
1096                 ret = sysfs_create_group(&msipf_device->dev.kobj,
1097                                          &msipf_old_attribute_group);
1098                 if (ret)
1099                         goto fail_create_attr;
1100
1101                 /* Disable automatic brightness control by default because
1102                  * this module was probably loaded to do brightness control in
1103                  * software. */
1104
1105                 if (auto_brightness != 2)
1106                         set_auto_brightness(auto_brightness);
1107         }
1108
1109         return 0;
1110
1111 fail_create_attr:
1112         sysfs_remove_group(&msipf_device->dev.kobj, &msipf_attribute_group);
1113 fail_create_group:
1114         msi_scm_model_exit();
1115 fail_scm_model_init:
1116         platform_device_del(msipf_device);
1117 fail_device_add:
1118         platform_device_put(msipf_device);
1119 fail_platform_driver:
1120         platform_driver_unregister(&msipf_driver);
1121 fail_backlight:
1122         backlight_device_unregister(msibl_device);
1123
1124         return ret;
1125 }
1126
1127 static void __exit msi_cleanup(void)
1128 {
1129         msi_scm_model_exit();
1130         sysfs_remove_group(&msipf_device->dev.kobj, &msipf_attribute_group);
1131         if (!quirks->old_ec_model && threeg_exists)
1132                 device_remove_file(&msipf_device->dev, &dev_attr_threeg);
1133         platform_device_unregister(msipf_device);
1134         platform_driver_unregister(&msipf_driver);
1135         backlight_device_unregister(msibl_device);
1136
1137         if (quirks->old_ec_model) {
1138                 /* Enable automatic brightness control again */
1139                 if (auto_brightness != 2)
1140                         set_auto_brightness(1);
1141         }
1142 }
1143
1144 module_init(msi_init);
1145 module_exit(msi_cleanup);
1146
1147 MODULE_AUTHOR("Lennart Poettering");
1148 MODULE_DESCRIPTION("MSI Laptop Support");
1149 MODULE_LICENSE("GPL");