drivers/platform/x86/msi-laptop.c

   1 /*-*-linux-c-*-*/
   2
   3 /*
   4   Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de>
   5
   6   This program is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation; either version 2 of the License, or
   9   (at your option) any later version.
  10
  11   This program is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with this program; if not, write to the Free Software
  18   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19   02110-1301, USA.
  20  */
  21
  22 /*
  23  * msi-laptop.c - MSI S270 laptop support. This laptop is sold under
  24  * various brands, including "Cytron/TCM/Medion/Tchibo MD96100".
  25  *
  26  * Driver also supports S271, S420 models.
  27  *
  28  * This driver exports a few files in /sys/devices/platform/msi-laptop-pf/:
  29  *
  30  *   lcd_level - Screen brightness: contains a single integer in the
  31  *   range 0..8. (rw)
  32  *
  33  *   auto_brightness - Enable automatic brightness control: contains
  34  *   either 0 or 1. If set to 1 the hardware adjusts the screen
  35  *   brightness automatically when the power cord is
  36  *   plugged/unplugged. (rw)
  37  *
  38  *   wlan - WLAN subsystem enabled: contains either 0 or 1. (ro)
  39  *
  40  *   bluetooth - Bluetooth subsystem enabled: contains either 0 or 1
  41  *   Please note that this file is constantly 0 if no Bluetooth
  42  *   hardware is available. (ro)
  43  *
  44  * In addition to these platform device attributes the driver
  45  * registers itself in the Linux backlight control subsystem and is
  46  * available to userspace under /sys/class/backlight/msi-laptop-bl/.
  47  *
  48  * This driver might work on other laptops produced by MSI. If you
  49  * want to try it you can pass force=1 as argument to the module which
  50  * will force it to load even when the DMI data doesn't identify the
  51  * laptop as MSI S270. YMMV.
  52  */
  53
  54 #include <linux/module.h>
  55 #include <linux/kernel.h>
  56 #include <linux/init.h>
  57 #include <linux/acpi.h>
  58 #include <linux/dmi.h>
  59 #include <linux/backlight.h>
  60 #include <linux/platform_device.h>
  61 #include <linux/rfkill.h>
  62 #include <linux/i8042.h>
  63
  64 #define MSI_DRIVER_VERSION "0.5"
  65
  66 #define MSI_LCD_LEVEL_MAX 9
  67
  68 #define MSI_EC_COMMAND_WIRELESS 0x10
  69 #define MSI_EC_COMMAND_LCD_LEVEL 0x11
  70
  71 #define MSI_STANDARD_EC_COMMAND_ADDRESS 0x2e
  72 #define MSI_STANDARD_EC_BLUETOOTH_MASK  (1 << 0)
  73 #define MSI_STANDARD_EC_WEBCAM_MASK     (1 << 1)
  74 #define MSI_STANDARD_EC_WLAN_MASK       (1 << 3)
  75 #define MSI_STANDARD_EC_3G_MASK         (1 << 4)
  76
  77 /* For set SCM load flag to disable BIOS fn key */
  78 #define MSI_STANDARD_EC_SCM_LOAD_ADDRESS        0x2d
  79 #define MSI_STANDARD_EC_SCM_LOAD_MASK           (1 << 0)
  80
  81 static int msi_laptop_resume(struct platform_device *device);
  82
  83 #define MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS  0x2f
  84
  85 static int force;
  86 module_param(force, bool, 0);
  87 MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
  88
  89 static int auto_brightness;
  90 module_param(auto_brightness, int, 0);
  91 MODULE_PARM_DESC(auto_brightness, "Enable automatic brightness control (0: disabled; 1: enabled; 2: don't touch)");
  92
  93 static bool old_ec_model;
  94 static int wlan_s, bluetooth_s, threeg_s;
  95 static int threeg_exists;
  96
  97 /* Some MSI 3G netbook only have one fn key to control Wlan/Bluetooth/3G,
  98  * those netbook will load the SCM (windows app) to disable the original
  99  * Wlan/Bluetooth control by BIOS when user press fn key, then control
 100  * Wlan/Bluetooth/3G by SCM (software control by OS). Without SCM, user
 101  * cann't on/off 3G module on those 3G netbook.
 102  * On Linux, msi-laptop driver will do the same thing to disable the
 103  * original BIOS control, then might need use HAL or other userland
 104  * application to do the software control that simulate with SCM.
 105  * e.g. MSI N034 netbook
 106  */
 107 static bool load_scm_model;
 108 static struct rfkill *rfk_wlan, *rfk_bluetooth, *rfk_threeg;
 109
 110 /* Hardware access */
 111
 112 static int set_lcd_level(int level)
 113 {
 114         u8 buf[2];
 115
 116         if (level < 0 || level >= MSI_LCD_LEVEL_MAX)
 117                 return -EINVAL;
 118
 119         buf[0] = 0x80;
 120         buf[1] = (u8) (level*31);
 121
 122         return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, buf, sizeof(buf),
 123                               NULL, 0, 1);
 124 }
 125
 126 static int get_lcd_level(void)
 127 {
 128         u8 wdata = 0, rdata;
 129         int result;
 130
 131         result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1,
 132                                 &rdata, 1, 1);
 133         if (result < 0)
 134                 return result;
 135
 136         return (int) rdata / 31;
 137 }
 138
 139 static int get_auto_brightness(void)
 140 {
 141         u8 wdata = 4, rdata;
 142         int result;
 143
 144         result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1,
 145                                 &rdata, 1, 1);
 146         if (result < 0)
 147                 return result;
 148
 149         return !!(rdata & 8);
 150 }
 151
 152 static int set_auto_brightness(int enable)
 153 {
 154         u8 wdata[2], rdata;
 155         int result;
 156
 157         wdata[0] = 4;
 158
 159         result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 1,
 160                                 &rdata, 1, 1);
 161         if (result < 0)
 162                 return result;
 163
 164         wdata[0] = 0x84;
 165         wdata[1] = (rdata & 0xF7) | (enable ? 8 : 0);
 166
 167         return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 2,
 168                               NULL, 0, 1);
 169 }
 170
 171 static ssize_t set_device_state(const char *buf, size_t count, u8 mask)
 172 {
 173         int status;
 174         u8 wdata = 0, rdata;
 175         int result;
 176
 177         if (sscanf(buf, "%i", &status) != 1 || (status < 0 || status > 1))
 178                 return -EINVAL;
 179
 180         /* read current device state */
 181         result = ec_read(MSI_STANDARD_EC_COMMAND_ADDRESS, &rdata);
 182         if (result < 0)
 183                 return -EINVAL;
 184
 185         if (!!(rdata & mask) != status) {
 186                 /* reverse device bit */
 187                 if (rdata & mask)
 188                         wdata = rdata & ~mask;
 189                 else
 190                         wdata = rdata | mask;
 191
 192                 result = ec_write(MSI_STANDARD_EC_COMMAND_ADDRESS, wdata);
 193                 if (result < 0)
 194                         return -EINVAL;
 195         }
 196
 197         return count;
 198 }
 199
 200 static int get_wireless_state(int *wlan, int *bluetooth)
 201 {
 202         u8 wdata = 0, rdata;
 203         int result;
 204
 205         result = ec_transaction(MSI_EC_COMMAND_WIRELESS, &wdata, 1, &rdata, 1, 1);
 206         if (result < 0)
 207                 return -1;
 208
 209         if (wlan)
 210                 *wlan = !!(rdata & 8);
 211
 212         if (bluetooth)
 213                 *bluetooth = !!(rdata & 128);
 214
 215         return 0;
 216 }
 217
 218 static int get_wireless_state_ec_standard(void)
 219 {
 220         u8 rdata;
 221         int result;
 222
 223         result = ec_read(MSI_STANDARD_EC_COMMAND_ADDRESS, &rdata);
 224         if (result < 0)
 225                 return -1;
 226
 227         wlan_s = !!(rdata & MSI_STANDARD_EC_WLAN_MASK);
 228
 229         bluetooth_s = !!(rdata & MSI_STANDARD_EC_BLUETOOTH_MASK);
 230
 231         threeg_s = !!(rdata & MSI_STANDARD_EC_3G_MASK);
 232
 233         return 0;
 234 }
 235
 236 static int get_threeg_exists(void)
 237 {
 238         u8 rdata;
 239         int result;
 240
 241         result = ec_read(MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS, &rdata);
 242         if (result < 0)
 243                 return -1;
 244
 245         threeg_exists = !!(rdata & MSI_STANDARD_EC_3G_MASK);
 246
 247         return 0;
 248 }
 249
 250 /* Backlight device stuff */
 251
 252 static int bl_get_brightness(struct backlight_device *b)
 253 {
 254         return get_lcd_level();
 255 }
 256
 257
 258 static int bl_update_status(struct backlight_device *b)
 259 {
 260         return set_lcd_level(b->props.brightness);
 261 }
 262
 263 static const struct backlight_ops msibl_ops = {
 264         .get_brightness = bl_get_brightness,
 265         .update_status  = bl_update_status,
 266 };
 267
 268 static struct backlight_device *msibl_device;
 269
 270 /* Platform device */
 271
 272 static ssize_t show_wlan(struct device *dev,
 273         struct device_attribute *attr, char *buf)
 274 {
 275
 276         int ret, enabled;
 277
 278         if (old_ec_model) {
 279                 ret = get_wireless_state(&enabled, NULL);
 280         } else {
 281                 ret = get_wireless_state_ec_standard();
 282                 enabled = wlan_s;
 283         }
 284         if (ret < 0)
 285                 return ret;
 286
 287         return sprintf(buf, "%i\n", enabled);
 288 }
 289
 290 static ssize_t store_wlan(struct device *dev,
 291         struct device_attribute *attr, const char *buf, size_t count)
 292 {
 293         return set_device_state(buf, count, MSI_STANDARD_EC_WLAN_MASK);
 294 }
 295
 296 static ssize_t show_bluetooth(struct device *dev,
 297         struct device_attribute *attr, char *buf)
 298 {
 299
 300         int ret, enabled;
 301
 302         if (old_ec_model) {
 303                 ret = get_wireless_state(NULL, &enabled);
 304         } else {
 305                 ret = get_wireless_state_ec_standard();
 306                 enabled = bluetooth_s;
 307         }
 308         if (ret < 0)
 309                 return ret;
 310
 311         return sprintf(buf, "%i\n", enabled);
 312 }
 313
 314 static ssize_t store_bluetooth(struct device *dev,
 315         struct device_attribute *attr, const char *buf, size_t count)
 316 {
 317         return set_device_state(buf, count, MSI_STANDARD_EC_BLUETOOTH_MASK);
 318 }
 319
 320 static ssize_t show_threeg(struct device *dev,
 321         struct device_attribute *attr, char *buf)
 322 {
 323
 324         int ret;
 325
 326         /* old msi ec not support 3G */
 327         if (old_ec_model)
 328                 return -1;
 329
 330         ret = get_wireless_state_ec_standard();
 331         if (ret < 0)
 332                 return ret;
 333
 334         return sprintf(buf, "%i\n", threeg_s);
 335 }
 336
 337 static ssize_t store_threeg(struct device *dev,
 338         struct device_attribute *attr, const char *buf, size_t count)
 339 {
 340         return set_device_state(buf, count, MSI_STANDARD_EC_3G_MASK);
 341 }
 342
 343 static ssize_t show_lcd_level(struct device *dev,
 344         struct device_attribute *attr, char *buf)
 345 {
 346
 347         int ret;
 348
 349         ret = get_lcd_level();
 350         if (ret < 0)
 351                 return ret;
 352
 353         return sprintf(buf, "%i\n", ret);
 354 }
 355
 356 static ssize_t store_lcd_level(struct device *dev,
 357         struct device_attribute *attr, const char *buf, size_t count)
 358 {
 359
 360         int level, ret;
 361
 362         if (sscanf(buf, "%i", &level) != 1 ||
 363             (level < 0 || level >= MSI_LCD_LEVEL_MAX))
 364                 return -EINVAL;
 365
 366         ret = set_lcd_level(level);
 367         if (ret < 0)
 368                 return ret;
 369
 370         return count;
 371 }
 372
 373 static ssize_t show_auto_brightness(struct device *dev,
 374         struct device_attribute *attr, char *buf)
 375 {
 376
 377         int ret;
 378
 379         ret = get_auto_brightness();
 380         if (ret < 0)
 381                 return ret;
 382
 383         return sprintf(buf, "%i\n", ret);
 384 }
 385
 386 static ssize_t store_auto_brightness(struct device *dev,
 387         struct device_attribute *attr, const char *buf, size_t count)
 388 {
 389
 390         int enable, ret;
 391
 392         if (sscanf(buf, "%i", &enable) != 1 || (enable != (enable & 1)))
 393                 return -EINVAL;
 394
 395         ret = set_auto_brightness(enable);
 396         if (ret < 0)
 397                 return ret;
 398
 399         return count;
 400 }
 401
 402 static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
 403 static DEVICE_ATTR(auto_brightness, 0644, show_auto_brightness,
 404                    store_auto_brightness);
 405 static DEVICE_ATTR(bluetooth, 0444, show_bluetooth, NULL);
 406 static DEVICE_ATTR(wlan, 0444, show_wlan, NULL);
 407 static DEVICE_ATTR(threeg, 0444, show_threeg, NULL);
 408
 409 static struct attribute *msipf_attributes[] = {
 410         &dev_attr_lcd_level.attr,
 411         &dev_attr_auto_brightness.attr,
 412         &dev_attr_bluetooth.attr,
 413         &dev_attr_wlan.attr,
 414         NULL
 415 };
 416
 417 static struct attribute_group msipf_attribute_group = {
 418         .attrs = msipf_attributes
 419 };
 420
 421 static struct platform_driver msipf_driver = {
 422         .driver = {
 423                 .name = "msi-laptop-pf",
 424                 .owner = THIS_MODULE,
 425         },
 426         .resume = msi_laptop_resume,
 427 };
 428
 429 static struct platform_device *msipf_device;
 430
 431 /* Initialization */
 432
 433 static int dmi_check_cb(const struct dmi_system_id *id)
 434 {
 435         printk(KERN_INFO "msi-laptop: Identified laptop model '%s'.\n",
 436                id->ident);
 437         return 1;
 438 }
 439
 440 static struct dmi_system_id __initdata msi_dmi_table[] = {
 441         {
 442                 .ident = "MSI S270",
 443                 .matches = {
 444                         DMI_MATCH(DMI_SYS_VENDOR, "MICRO-STAR INT'L CO.,LTD"),
 445                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-1013"),
 446                         DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
 447                         DMI_MATCH(DMI_CHASSIS_VENDOR,
 448                                   "MICRO-STAR INT'L CO.,LTD")
 449                 },
 450                 .callback = dmi_check_cb
 451         },
 452         {
 453                 .ident = "MSI S271",
 454                 .matches = {
 455                         DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
 456                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-1058"),
 457                         DMI_MATCH(DMI_PRODUCT_VERSION, "0581"),
 458                         DMI_MATCH(DMI_BOARD_NAME, "MS-1058")
 459                 },
 460                 .callback = dmi_check_cb
 461         },
 462         {
 463                 .ident = "MSI S420",
 464                 .matches = {
 465                         DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
 466                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-1412"),
 467                         DMI_MATCH(DMI_BOARD_VENDOR, "MSI"),
 468                         DMI_MATCH(DMI_BOARD_NAME, "MS-1412")
 469                 },
 470                 .callback = dmi_check_cb
 471         },
 472         {
 473                 .ident = "Medion MD96100",
 474                 .matches = {
 475                         DMI_MATCH(DMI_SYS_VENDOR, "NOTEBOOK"),
 476                         DMI_MATCH(DMI_PRODUCT_NAME, "SAM2000"),
 477                         DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
 478                         DMI_MATCH(DMI_CHASSIS_VENDOR,
 479                                   "MICRO-STAR INT'L CO.,LTD")
 480                 },
 481                 .callback = dmi_check_cb
 482         },
 483         { }
 484 };
 485
 486 static struct dmi_system_id __initdata msi_load_scm_models_dmi_table[] = {
 487         {
 488                 .ident = "MSI N034",
 489                 .matches = {
 490                         DMI_MATCH(DMI_SYS_VENDOR,
 491                                 "MICRO-STAR INTERNATIONAL CO., LTD"),
 492                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-N034"),
 493                         DMI_MATCH(DMI_CHASSIS_VENDOR,
 494                         "MICRO-STAR INTERNATIONAL CO., LTD")
 495                 },
 496                 .callback = dmi_check_cb
 497         },
 498         {
 499                 .ident = "MSI N051",
 500                 .matches = {
 501                         DMI_MATCH(DMI_SYS_VENDOR,
 502                                 "MICRO-STAR INTERNATIONAL CO., LTD"),
 503                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-N051"),
 504                         DMI_MATCH(DMI_CHASSIS_VENDOR,
 505                         "MICRO-STAR INTERNATIONAL CO., LTD")
 506                 },
 507                 .callback = dmi_check_cb
 508         },
 509         {
 510                 .ident = "MSI N014",
 511                 .matches = {
 512                         DMI_MATCH(DMI_SYS_VENDOR,
 513                                 "MICRO-STAR INTERNATIONAL CO., LTD"),
 514                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-N014"),
 515                 },
 516                 .callback = dmi_check_cb
 517         },
 518         {
 519                 .ident = "MSI CR620",
 520                 .matches = {
 521                         DMI_MATCH(DMI_SYS_VENDOR,
 522                                 "Micro-Star International"),
 523                         DMI_MATCH(DMI_PRODUCT_NAME, "CR620"),
 524                 },
 525                 .callback = dmi_check_cb
 526         },
 527         { }
 528 };
 529
 530 static int rfkill_bluetooth_set(void *data, bool blocked)
 531 {
 532         /* Do something with blocked...*/
 533         /*
 534          * blocked == false is on
 535          * blocked == true is off
 536          */
 537         if (blocked)
 538                 set_device_state("0", 0, MSI_STANDARD_EC_BLUETOOTH_MASK);
 539         else
 540                 set_device_state("1", 0, MSI_STANDARD_EC_BLUETOOTH_MASK);
 541
 542         return 0;
 543 }
 544
 545 static int rfkill_wlan_set(void *data, bool blocked)
 546 {
 547         if (blocked)
 548                 set_device_state("0", 0, MSI_STANDARD_EC_WLAN_MASK);
 549         else
 550                 set_device_state("1", 0, MSI_STANDARD_EC_WLAN_MASK);
 551
 552         return 0;
 553 }
 554
 555 static int rfkill_threeg_set(void *data, bool blocked)
 556 {
 557         if (blocked)
 558                 set_device_state("0", 0, MSI_STANDARD_EC_3G_MASK);
 559         else
 560                 set_device_state("1", 0, MSI_STANDARD_EC_3G_MASK);
 561
 562         return 0;
 563 }
 564
 565 static const struct rfkill_ops rfkill_bluetooth_ops = {
 566         .set_block = rfkill_bluetooth_set
 567 };
 568
 569 static const struct rfkill_ops rfkill_wlan_ops = {
 570         .set_block = rfkill_wlan_set
 571 };
 572
 573 static const struct rfkill_ops rfkill_threeg_ops = {
 574         .set_block = rfkill_threeg_set
 575 };
 576
 577 static void rfkill_cleanup(void)
 578 {
 579         if (rfk_bluetooth) {
 580                 rfkill_unregister(rfk_bluetooth);
 581                 rfkill_destroy(rfk_bluetooth);
 582         }
 583
 584         if (rfk_threeg) {
 585                 rfkill_unregister(rfk_threeg);
 586                 rfkill_destroy(rfk_threeg);
 587         }
 588
 589         if (rfk_wlan) {
 590                 rfkill_unregister(rfk_wlan);
 591                 rfkill_destroy(rfk_wlan);
 592         }
 593 }
 594
 595 static void msi_update_rfkill(struct work_struct *ignored)
 596 {
 597         get_wireless_state_ec_standard();
 598
 599         if (rfk_wlan)
 600                 rfkill_set_sw_state(rfk_wlan, !wlan_s);
 601         if (rfk_bluetooth)
 602                 rfkill_set_sw_state(rfk_bluetooth, !bluetooth_s);
 603         if (rfk_threeg)
 604                 rfkill_set_sw_state(rfk_threeg, !threeg_s);
 605 }
 606 static DECLARE_DELAYED_WORK(msi_rfkill_work, msi_update_rfkill);
 607
 608 static bool msi_laptop_i8042_filter(unsigned char data, unsigned char str,
 609                                 struct serio *port)
 610 {
 611         static bool extended;
 612
 613         if (str & 0x20)
 614                 return false;
 615
 616         /* 0x54 wwan, 0x62 bluetooth, 0x76 wlan*/
 617         if (unlikely(data == 0xe0)) {
 618                 extended = true;
 619                 return false;
 620         } else if (unlikely(extended)) {
 621                 switch (data) {
 622                 case 0x54:
 623                 case 0x62:
 624                 case 0x76:
 625                         schedule_delayed_work(&msi_rfkill_work,
 626                                 round_jiffies_relative(0.5 * HZ));
 627                         break;
 628                 }
 629                 extended = false;
 630         }
 631
 632         return false;
 633 }
 634
 635 static void msi_init_rfkill(struct work_struct *ignored)
 636 {
 637         if (rfk_wlan) {
 638                 rfkill_set_sw_state(rfk_wlan, !wlan_s);
 639                 rfkill_wlan_set(NULL, !wlan_s);
 640         }
 641         if (rfk_bluetooth) {
 642                 rfkill_set_sw_state(rfk_bluetooth, !bluetooth_s);
 643                 rfkill_bluetooth_set(NULL, !bluetooth_s);
 644         }
 645         if (rfk_threeg) {
 646                 rfkill_set_sw_state(rfk_threeg, !threeg_s);
 647                 rfkill_threeg_set(NULL, !threeg_s);
 648         }
 649 }
 650 static DECLARE_DELAYED_WORK(msi_rfkill_init, msi_init_rfkill);
 651
 652 static int rfkill_init(struct platform_device *sdev)
 653 {
 654         /* add rfkill */
 655         int retval;
 656
 657         /* keep the hardware wireless state */
 658         get_wireless_state_ec_standard();
 659
 660         rfk_bluetooth = rfkill_alloc("msi-bluetooth", &sdev->dev,
 661                                 RFKILL_TYPE_BLUETOOTH,
 662                                 &rfkill_bluetooth_ops, NULL);
 663         if (!rfk_bluetooth) {
 664                 retval = -ENOMEM;
 665                 goto err_bluetooth;
 666         }
 667         retval = rfkill_register(rfk_bluetooth);
 668         if (retval)
 669                 goto err_bluetooth;
 670
 671         rfk_wlan = rfkill_alloc("msi-wlan", &sdev->dev, RFKILL_TYPE_WLAN,
 672                                 &rfkill_wlan_ops, NULL);
 673         if (!rfk_wlan) {
 674                 retval = -ENOMEM;
 675                 goto err_wlan;
 676         }
 677         retval = rfkill_register(rfk_wlan);
 678         if (retval)
 679                 goto err_wlan;
 680
 681         if (threeg_exists) {
 682                 rfk_threeg = rfkill_alloc("msi-threeg", &sdev->dev,
 683                                 RFKILL_TYPE_WWAN, &rfkill_threeg_ops, NULL);
 684                 if (!rfk_threeg) {
 685                         retval = -ENOMEM;
 686                         goto err_threeg;
 687                 }
 688                 retval = rfkill_register(rfk_threeg);
 689                 if (retval)
 690                         goto err_threeg;
 691         }
 692
 693         /* schedule to run rfkill state initial */
 694         schedule_delayed_work(&msi_rfkill_init,
 695                                 round_jiffies_relative(1 * HZ));
 696
 697         return 0;
 698
 699 err_threeg:
 700         rfkill_destroy(rfk_threeg);
 701         if (rfk_wlan)
 702                 rfkill_unregister(rfk_wlan);
 703 err_wlan:
 704         rfkill_destroy(rfk_wlan);
 705         if (rfk_bluetooth)
 706                 rfkill_unregister(rfk_bluetooth);
 707 err_bluetooth:
 708         rfkill_destroy(rfk_bluetooth);
 709
 710         return retval;
 711 }
 712
 713 static int msi_laptop_resume(struct platform_device *device)
 714 {
 715         u8 data;
 716         int result;
 717
 718         if (!load_scm_model)
 719                 return 0;
 720
 721         /* set load SCM to disable hardware control by fn key */
 722         result = ec_read(MSI_STANDARD_EC_SCM_LOAD_ADDRESS, &data);
 723         if (result < 0)
 724                 return result;
 725
 726         result = ec_write(MSI_STANDARD_EC_SCM_LOAD_ADDRESS,
 727                 data | MSI_STANDARD_EC_SCM_LOAD_MASK);
 728         if (result < 0)
 729                 return result;
 730
 731         return 0;
 732 }
 733
 734 static int load_scm_model_init(struct platform_device *sdev)
 735 {
 736         u8 data;
 737         int result;
 738
 739         /* allow userland write sysfs file  */
 740         dev_attr_bluetooth.store = store_bluetooth;
 741         dev_attr_wlan.store = store_wlan;
 742         dev_attr_threeg.store = store_threeg;
 743         dev_attr_bluetooth.attr.mode |= S_IWUSR;
 744         dev_attr_wlan.attr.mode |= S_IWUSR;
 745         dev_attr_threeg.attr.mode |= S_IWUSR;
 746
 747         /* disable hardware control by fn key */
 748         result = ec_read(MSI_STANDARD_EC_SCM_LOAD_ADDRESS, &data);
 749         if (result < 0)
 750                 return result;
 751
 752         result = ec_write(MSI_STANDARD_EC_SCM_LOAD_ADDRESS,
 753                 data | MSI_STANDARD_EC_SCM_LOAD_MASK);
 754         if (result < 0)
 755                 return result;
 756
 757         /* initial rfkill */
 758         result = rfkill_init(sdev);
 759         if (result < 0)
 760                 goto fail_rfkill;
 761
 762         result = i8042_install_filter(msi_laptop_i8042_filter);
 763         if (result) {
 764                 printk(KERN_ERR
 765                         "msi-laptop: Unable to install key filter\n");
 766                 goto fail_filter;
 767         }
 768
 769         return 0;
 770
 771 fail_filter:
 772         rfkill_cleanup();
 773
 774 fail_rfkill:
 775
 776         return result;
 777
 778 }
 779
 780 static int __init msi_init(void)
 781 {
 782         int ret;
 783
 784         if (acpi_disabled)
 785                 return -ENODEV;
 786
 787         if (force || dmi_check_system(msi_dmi_table))
 788                 old_ec_model = 1;
 789
 790         if (!old_ec_model)
 791                 get_threeg_exists();
 792
 793         if (!old_ec_model && dmi_check_system(msi_load_scm_models_dmi_table))
 794                 load_scm_model = 1;
 795
 796         if (auto_brightness < 0 || auto_brightness > 2)
 797                 return -EINVAL;
 798
 799         /* Register backlight stuff */
 800
 801         if (acpi_video_backlight_support()) {
 802                 printk(KERN_INFO "MSI: Brightness ignored, must be controlled "
 803                        "by ACPI video driver\n");
 804         } else {
 805                 struct backlight_properties props;
 806                 memset(&props, 0, sizeof(struct backlight_properties));
 807                 props.max_brightness = MSI_LCD_LEVEL_MAX - 1;
 808                 msibl_device = backlight_device_register("msi-laptop-bl", NULL,
 809                                                          NULL, &msibl_ops,
 810                                                          &props);
 811                 if (IS_ERR(msibl_device))
 812                         return PTR_ERR(msibl_device);
 813         }
 814
 815         ret = platform_driver_register(&msipf_driver);
 816         if (ret)
 817                 goto fail_backlight;
 818
 819         /* Register platform stuff */
 820
 821         msipf_device = platform_device_alloc("msi-laptop-pf", -1);
 822         if (!msipf_device) {
 823                 ret = -ENOMEM;
 824                 goto fail_platform_driver;
 825         }
 826
 827         ret = platform_device_add(msipf_device);
 828         if (ret)
 829                 goto fail_platform_device1;
 830
 831         if (load_scm_model && (load_scm_model_init(msipf_device) < 0)) {
 832                 ret = -EINVAL;
 833                 goto fail_platform_device1;
 834         }
 835
 836         ret = sysfs_create_group(&msipf_device->dev.kobj,
 837                                  &msipf_attribute_group);
 838         if (ret)
 839                 goto fail_platform_device2;
 840
 841         if (!old_ec_model) {
 842                 if (threeg_exists)
 843                         ret = device_create_file(&msipf_device->dev,
 844                                                 &dev_attr_threeg);
 845                 if (ret)
 846                         goto fail_platform_device2;
 847         }
 848
 849         /* Disable automatic brightness control by default because
 850          * this module was probably loaded to do brightness control in
 851          * software. */
 852
 853         if (auto_brightness != 2)
 854                 set_auto_brightness(auto_brightness);
 855
 856         printk(KERN_INFO "msi-laptop: driver "MSI_DRIVER_VERSION" successfully loaded.\n");
 857
 858         return 0;
 859
 860 fail_platform_device2:
 861
 862         if (load_scm_model) {
 863                 i8042_remove_filter(msi_laptop_i8042_filter);
 864                 cancel_delayed_work_sync(&msi_rfkill_work);
 865                 rfkill_cleanup();
 866         }
 867         platform_device_del(msipf_device);
 868
 869 fail_platform_device1:
 870
 871         platform_device_put(msipf_device);
 872
 873 fail_platform_driver:
 874
 875         platform_driver_unregister(&msipf_driver);
 876
 877 fail_backlight:
 878
 879         backlight_device_unregister(msibl_device);
 880
 881         return ret;
 882 }
 883
 884 static void __exit msi_cleanup(void)
 885 {
 886         if (load_scm_model) {
 887                 i8042_remove_filter(msi_laptop_i8042_filter);
 888                 cancel_delayed_work_sync(&msi_rfkill_work);
 889                 rfkill_cleanup();
 890         }
 891
 892         sysfs_remove_group(&msipf_device->dev.kobj, &msipf_attribute_group);
 893         if (!old_ec_model && threeg_exists)
 894                 device_remove_file(&msipf_device->dev, &dev_attr_threeg);
 895         platform_device_unregister(msipf_device);
 896         platform_driver_unregister(&msipf_driver);
 897         backlight_device_unregister(msibl_device);
 898
 899         /* Enable automatic brightness control again */
 900         if (auto_brightness != 2)
 901                 set_auto_brightness(1);
 902
 903         printk(KERN_INFO "msi-laptop: driver unloaded.\n");
 904 }
 905
 906 module_init(msi_init);
 907 module_exit(msi_cleanup);
 908
 909 MODULE_AUTHOR("Lennart Poettering");
 910 MODULE_DESCRIPTION("MSI Laptop Support");
 911 MODULE_VERSION(MSI_DRIVER_VERSION);
 912 MODULE_LICENSE("GPL");
 913
 914 MODULE_ALIAS("dmi:*:svnMICRO-STARINT'LCO.,LTD:pnMS-1013:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
 915 MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1058:pvr0581:rvnMSI:rnMS-1058:*:ct10:*");
 916 MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1412:*:rvnMSI:rnMS-1412:*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
 917 MODULE_ALIAS("dmi:*:svnNOTEBOOK:pnSAM2000:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
 918 MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N034:*");
 919 MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N051:*");
 920 MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N014:*");
 921 MODULE_ALIAS("dmi:*:svnMicro-StarInternational*:pnCR620:*");