Free Electrons

Embedded Linux Experts

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
/*-*-linux-c-*-*/

/*
  Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de>

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  02110-1301, USA.
 */

/*
 * msi-laptop.c - MSI S270 laptop support. This laptop is sold under
 * various brands, including "Cytron/TCM/Medion/Tchibo MD96100".
 *
 * Driver also supports S271, S420 models.
 *
 * This driver exports a few files in /sys/devices/platform/msi-laptop-pf/:
 *
 *   lcd_level - Screen brightness: contains a single integer in the
 *   range 0..8. (rw)
 *
 *   auto_brightness - Enable automatic brightness control: contains
 *   either 0 or 1. If set to 1 the hardware adjusts the screen
 *   brightness automatically when the power cord is
 *   plugged/unplugged. (rw)
 *
 *   wlan - WLAN subsystem enabled: contains either 0 or 1. (ro)
 *
 *   bluetooth - Bluetooth subsystem enabled: contains either 0 or 1
 *   Please note that this file is constantly 0 if no Bluetooth
 *   hardware is available. (ro)
 *
 * In addition to these platform device attributes the driver
 * registers itself in the Linux backlight control subsystem and is
 * available to userspace under /sys/class/backlight/msi-laptop-bl/.
 *
 * This driver might work on other laptops produced by MSI. If you
 * want to try it you can pass force=1 as argument to the module which
 * will force it to load even when the DMI data doesn't identify the
 * laptop as MSI S270. YMMV.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/acpi.h>
#include <linux/dmi.h>
#include <linux/backlight.h>
#include <linux/platform_device.h>
#include <linux/rfkill.h>
#include <linux/i8042.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
#include <acpi/video.h>

#define MSI_DRIVER_VERSION "0.5"

#define MSI_LCD_LEVEL_MAX 9

#define MSI_EC_COMMAND_WIRELESS 0x10
#define MSI_EC_COMMAND_LCD_LEVEL 0x11

#define MSI_STANDARD_EC_COMMAND_ADDRESS	0x2e
#define MSI_STANDARD_EC_BLUETOOTH_MASK	(1 << 0)
#define MSI_STANDARD_EC_WEBCAM_MASK	(1 << 1)
#define MSI_STANDARD_EC_WLAN_MASK	(1 << 3)
#define MSI_STANDARD_EC_3G_MASK		(1 << 4)

/* For set SCM load flag to disable BIOS fn key */
#define MSI_STANDARD_EC_SCM_LOAD_ADDRESS	0x2d
#define MSI_STANDARD_EC_SCM_LOAD_MASK		(1 << 0)

#define MSI_STANDARD_EC_FUNCTIONS_ADDRESS	0xe4
/* Power LED is orange - Turbo mode */
#define MSI_STANDARD_EC_TURBO_MASK		(1 << 1)
/* Power LED is green - ECO mode */
#define MSI_STANDARD_EC_ECO_MASK		(1 << 3)
/* Touchpad is turned on */
#define MSI_STANDARD_EC_TOUCHPAD_MASK		(1 << 4)
/* If this bit != bit 1, turbo mode can't be toggled */
#define MSI_STANDARD_EC_TURBO_COOLDOWN_MASK	(1 << 7)

#define MSI_STANDARD_EC_FAN_ADDRESS		0x33
/* If zero, fan rotates at maximal speed */
#define MSI_STANDARD_EC_AUTOFAN_MASK		(1 << 0)

#ifdef CONFIG_PM_SLEEP
static int msi_laptop_resume(struct device *device);
#endif
static SIMPLE_DEV_PM_OPS(msi_laptop_pm, NULL, msi_laptop_resume);

#define MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS	0x2f

static bool force;
module_param(force, bool, 0);
MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");

static int auto_brightness;
module_param(auto_brightness, int, 0);
MODULE_PARM_DESC(auto_brightness, "Enable automatic brightness control (0: disabled; 1: enabled; 2: don't touch)");

static const struct key_entry msi_laptop_keymap[] = {
	{KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },	/* Touch Pad On */
	{KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },/* Touch Pad On */
	{KE_END, 0}
};

static struct input_dev *msi_laptop_input_dev;

static int wlan_s, bluetooth_s, threeg_s;
static int threeg_exists;
static struct rfkill *rfk_wlan, *rfk_bluetooth, *rfk_threeg;

/* MSI laptop quirks */
struct quirk_entry {
	bool old_ec_model;

	/* Some MSI 3G netbook only have one fn key to control
	 * Wlan/Bluetooth/3G, those netbook will load the SCM (windows app) to
	 * disable the original Wlan/Bluetooth control by BIOS when user press
	 * fn key, then control Wlan/Bluetooth/3G by SCM (software control by
	 * OS). Without SCM, user cann't on/off 3G module on those 3G netbook.
	 * On Linux, msi-laptop driver will do the same thing to disable the
	 * original BIOS control, then might need use HAL or other userland
	 * application to do the software control that simulate with SCM.
	 * e.g. MSI N034 netbook
	 */
	bool load_scm_model;

	/* Some MSI laptops need delay before reading from EC */
	bool ec_delay;

	/* Some MSI Wind netbooks (e.g. MSI Wind U100) need loading SCM to get
	 * some features working (e.g. ECO mode), but we cannot change
	 * Wlan/Bluetooth state in software and we can only read its state.
	 */
	bool ec_read_only;
};

static struct quirk_entry *quirks;

/* Hardware access */

static int set_lcd_level(int level)
{
	u8 buf[2];

	if (level < 0 || level >= MSI_LCD_LEVEL_MAX)
		return -EINVAL;

	buf[0] = 0x80;
	buf[1] = (u8) (level*31);

	return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, buf, sizeof(buf),
			      NULL, 0);
}

static int get_lcd_level(void)
{
	u8 wdata = 0, rdata;
	int result;

	result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1,
				&rdata, 1);
	if (result < 0)
		return result;

	return (int) rdata / 31;
}

static int get_auto_brightness(void)
{
	u8 wdata = 4, rdata;
	int result;

	result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1,
				&rdata, 1);
	if (result < 0)
		return result;

	return !!(rdata & 8);
}

static int set_auto_brightness(int enable)
{
	u8 wdata[2], rdata;
	int result;

	wdata[0] = 4;

	result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 1,
				&rdata, 1);
	if (result < 0)
		return result;

	wdata[0] = 0x84;
	wdata[1] = (rdata & 0xF7) | (enable ? 8 : 0);

	return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 2,
			      NULL, 0);
}

static ssize_t set_device_state(const char *buf, size_t count, u8 mask)
{
	int status;
	u8 wdata = 0, rdata;
	int result;

	if (sscanf(buf, "%i", &status) != 1 || (status < 0 || status > 1))
		return -EINVAL;

	if (quirks->ec_read_only)
		return -EOPNOTSUPP;

	/* read current device state */
	result = ec_read(MSI_STANDARD_EC_COMMAND_ADDRESS, &rdata);
	if (result < 0)
		return result;

	if (!!(rdata & mask) != status) {
		/* reverse device bit */
		if (rdata & mask)
			wdata = rdata & ~mask;
		else
			wdata = rdata | mask;

		result = ec_write(MSI_STANDARD_EC_COMMAND_ADDRESS, wdata);
		if (result < 0)
			return result;
	}

	return count;
}

static int get_wireless_state(int *wlan, int *bluetooth)
{
	u8 wdata = 0, rdata;
	int result;

	result = ec_transaction(MSI_EC_COMMAND_WIRELESS, &wdata, 1, &rdata, 1);
	if (result < 0)
		return result;

	if (wlan)
		*wlan = !!(rdata & 8);

	if (bluetooth)
		*bluetooth = !!(rdata & 128);

	return 0;
}

static int get_wireless_state_ec_standard(void)
{
	u8 rdata;
	int result;

	result = ec_read(MSI_STANDARD_EC_COMMAND_ADDRESS, &rdata);
	if (result < 0)
		return result;

	wlan_s = !!(rdata & MSI_STANDARD_EC_WLAN_MASK);

	bluetooth_s = !!(rdata & MSI_STANDARD_EC_BLUETOOTH_MASK);

	threeg_s = !!(rdata & MSI_STANDARD_EC_3G_MASK);

	return 0;
}

static int get_threeg_exists(void)
{
	u8 rdata;
	int result;

	result = ec_read(MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS, &rdata);
	if (result < 0)
		return result;

	threeg_exists = !!(rdata & MSI_STANDARD_EC_3G_MASK);

	return 0;
}

/* Backlight device stuff */

static int bl_get_brightness(struct backlight_device *b)
{
	return get_lcd_level();
}


static int bl_update_status(struct backlight_device *b)
{
	return set_lcd_level(b->props.brightness);
}

static const struct backlight_ops msibl_ops = {
	.get_brightness = bl_get_brightness,
	.update_status  = bl_update_status,
};

static struct backlight_device *msibl_device;

/* Platform device */

static ssize_t show_wlan(struct device *dev,
	struct device_attribute *attr, char *buf)
{

	int ret, enabled = 0;

	if (quirks->old_ec_model) {
		ret = get_wireless_state(&enabled, NULL);
	} else {
		ret = get_wireless_state_ec_standard();
		enabled = wlan_s;
	}
	if (ret < 0)
		return ret;

	return sprintf(buf, "%i\n", enabled);
}

static ssize_t store_wlan(struct device *dev,
	struct device_attribute *attr, const char *buf, size_t count)
{
	return set_device_state(buf, count, MSI_STANDARD_EC_WLAN_MASK);
}

static ssize_t show_bluetooth(struct device *dev,
	struct device_attribute *attr, char *buf)
{

	int ret, enabled = 0;

	if (quirks->old_ec_model) {
		ret = get_wireless_state(NULL, &enabled);
	} else {
		ret = get_wireless_state_ec_standard();
		enabled = bluetooth_s;
	}
	if (ret < 0)
		return ret;

	return sprintf(buf, "%i\n", enabled);
}

static ssize_t store_bluetooth(struct device *dev,
	struct device_attribute *attr, const char *buf, size_t count)
{
	return set_device_state(buf, count, MSI_STANDARD_EC_BLUETOOTH_MASK);
}

static ssize_t show_threeg(struct device *dev,
	struct device_attribute *attr, char *buf)
{

	int ret;

	/* old msi ec not support 3G */
	if (quirks->old_ec_model)
		return -ENODEV;

	ret = get_wireless_state_ec_standard();
	if (ret < 0)
		return ret;

	return sprintf(buf, "%i\n", threeg_s);
}

static ssize_t store_threeg(struct device *dev,
	struct device_attribute *attr, const char *buf, size_t count)
{
	return set_device_state(buf, count, MSI_STANDARD_EC_3G_MASK);
}

static ssize_t show_lcd_level(struct device *dev,
	struct device_attribute *attr, char *buf)
{

	int ret;

	ret = get_lcd_level();
	if (ret < 0)
		return ret;

	return sprintf(buf, "%i\n", ret);
}

static ssize_t store_lcd_level(struct device *dev,
	struct device_attribute *attr, const char *buf, size_t count)
{

	int level, ret;

	if (sscanf(buf, "%i", &level) != 1 ||
	    (level < 0 || level >= MSI_LCD_LEVEL_MAX))
		return -EINVAL;

	ret = set_lcd_level(level);
	if (ret < 0)
		return ret;

	return count;
}

static ssize_t show_auto_brightness(struct device *dev,
	struct device_attribute *attr, char *buf)
{

	int ret;

	ret = get_auto_brightness();
	if (ret < 0)
		return ret;

	return sprintf(buf, "%i\n", ret);
}

static ssize_t store_auto_brightness(struct device *dev,
	struct device_attribute *attr, const char *buf, size_t count)
{

	int enable, ret;

	if (sscanf(buf, "%i", &enable) != 1 || (enable != (enable & 1)))
		return -EINVAL;

	ret = set_auto_brightness(enable);
	if (ret < 0)
		return ret;

	return count;
}

static ssize_t show_touchpad(struct device *dev,
	struct device_attribute *attr, char *buf)
{

	u8 rdata;
	int result;

	result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
	if (result < 0)
		return result;

	return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_TOUCHPAD_MASK));
}

static ssize_t show_turbo(struct device *dev,
	struct device_attribute *attr, char *buf)
{

	u8 rdata;
	int result;

	result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
	if (result < 0)
		return result;

	return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_TURBO_MASK));
}

static ssize_t show_eco(struct device *dev,
	struct device_attribute *attr, char *buf)
{

	u8 rdata;
	int result;

	result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
	if (result < 0)
		return result;

	return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_ECO_MASK));
}

static ssize_t show_turbo_cooldown(struct device *dev,
	struct device_attribute *attr, char *buf)
{

	u8 rdata;
	int result;

	result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
	if (result < 0)
		return result;

	return sprintf(buf, "%i\n", (!!(rdata & MSI_STANDARD_EC_TURBO_MASK)) |
		(!!(rdata & MSI_STANDARD_EC_TURBO_COOLDOWN_MASK) << 1));
}

static ssize_t show_auto_fan(struct device *dev,
	struct device_attribute *attr, char *buf)
{

	u8 rdata;
	int result;

	result = ec_read(MSI_STANDARD_EC_FAN_ADDRESS, &rdata);
	if (result < 0)
		return result;

	return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_AUTOFAN_MASK));
}

static ssize_t store_auto_fan(struct device *dev,
	struct device_attribute *attr, const char *buf, size_t count)
{

	int enable, result;

	if (sscanf(buf, "%i", &enable) != 1 || (enable != (enable & 1)))
		return -EINVAL;

	result = ec_write(MSI_STANDARD_EC_FAN_ADDRESS, enable);
	if (result < 0)
		return result;

	return count;
}

static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
static DEVICE_ATTR(auto_brightness, 0644, show_auto_brightness,
		   store_auto_brightness);
static DEVICE_ATTR(bluetooth, 0444, show_bluetooth, NULL);
static DEVICE_ATTR(wlan, 0444, show_wlan, NULL);
static DEVICE_ATTR(threeg, 0444, show_threeg, NULL);
static DEVICE_ATTR(touchpad, 0444, show_touchpad, NULL);
static DEVICE_ATTR(turbo_mode, 0444, show_turbo, NULL);
static DEVICE_ATTR(eco_mode, 0444, show_eco, NULL);
static DEVICE_ATTR(turbo_cooldown, 0444, show_turbo_cooldown, NULL);
static DEVICE_ATTR(auto_fan, 0644, show_auto_fan, store_auto_fan);

static struct attribute *msipf_attributes[] = {
	&dev_attr_bluetooth.attr,
	&dev_attr_wlan.attr,
	&dev_attr_touchpad.attr,
	&dev_attr_turbo_mode.attr,
	&dev_attr_eco_mode.attr,
	&dev_attr_turbo_cooldown.attr,
	&dev_attr_auto_fan.attr,
	NULL
};

static struct attribute *msipf_old_attributes[] = {
	&dev_attr_lcd_level.attr,
	&dev_attr_auto_brightness.attr,
	NULL
};

static const struct attribute_group msipf_attribute_group = {
	.attrs = msipf_attributes
};

static const struct attribute_group msipf_old_attribute_group = {
	.attrs = msipf_old_attributes
};

static struct platform_driver msipf_driver = {
	.driver = {
		.name = "msi-laptop-pf",
		.pm = &msi_laptop_pm,
	},
};

static struct platform_device *msipf_device;

/* Initialization */

static struct quirk_entry quirk_old_ec_model = {
	.old_ec_model = true,
};

static struct quirk_entry quirk_load_scm_model = {
	.load_scm_model = true,
	.ec_delay = true,
};

static struct quirk_entry quirk_load_scm_ro_model = {
	.load_scm_model = true,
	.ec_read_only = true,
};

static int dmi_check_cb(const struct dmi_system_id *dmi)
{
	pr_info("Identified laptop model '%s'\n", dmi->ident);

	quirks = dmi->driver_data;

	return 1;
}

static struct dmi_system_id __initdata msi_dmi_table[] = {
	{
		.ident = "MSI S270",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "MICRO-STAR INT'L CO.,LTD"),
			DMI_MATCH(DMI_PRODUCT_NAME, "MS-1013"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
			DMI_MATCH(DMI_CHASSIS_VENDOR,
				  "MICRO-STAR INT'L CO.,LTD")
		},
		.driver_data = &quirk_old_ec_model,
		.callback = dmi_check_cb
	},
	{
		.ident = "MSI S271",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
			DMI_MATCH(DMI_PRODUCT_NAME, "MS-1058"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "0581"),
			DMI_MATCH(DMI_BOARD_NAME, "MS-1058")
		},
		.driver_data = &quirk_old_ec_model,
		.callback = dmi_check_cb
	},
	{
		.ident = "MSI S420",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
			DMI_MATCH(DMI_PRODUCT_NAME, "MS-1412"),
			DMI_MATCH(DMI_BOARD_VENDOR, "MSI"),
			DMI_MATCH(DMI_BOARD_NAME, "MS-1412")
		},
		.driver_data = &quirk_old_ec_model,
		.callback = dmi_check_cb
	},
	{
		.ident = "Medion MD96100",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "NOTEBOOK"),
			DMI_MATCH(DMI_PRODUCT_NAME, "SAM2000"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
			DMI_MATCH(DMI_CHASSIS_VENDOR,
				  "MICRO-STAR INT'L CO.,LTD")
		},
		.driver_data = &quirk_old_ec_model,
		.callback = dmi_check_cb
	},
	{
		.ident = "MSI N034",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR,
				"MICRO-STAR INTERNATIONAL CO., LTD"),
			DMI_MATCH(DMI_PRODUCT_NAME, "MS-N034"),
			DMI_MATCH(DMI_CHASSIS_VENDOR,
			"MICRO-STAR INTERNATIONAL CO., LTD")
		},
		.driver_data = &quirk_load_scm_model,
		.callback = dmi_check_cb
	},
	{
		.ident = "MSI N051",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR,
				"MICRO-STAR INTERNATIONAL CO., LTD"),
			DMI_MATCH(DMI_PRODUCT_NAME, "MS-N051"),
			DMI_MATCH(DMI_CHASSIS_VENDOR,
			"MICRO-STAR INTERNATIONAL CO., LTD")
		},
		.driver_data = &quirk_load_scm_model,
		.callback = dmi_check_cb
	},
	{
		.ident = "MSI N014",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR,
				"MICRO-STAR INTERNATIONAL CO., LTD"),
			DMI_MATCH(DMI_PRODUCT_NAME, "MS-N014"),
		},
		.driver_data = &quirk_load_scm_model,
		.callback = dmi_check_cb
	},
	{
		.ident = "MSI CR620",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR,
				"Micro-Star International"),
			DMI_MATCH(DMI_PRODUCT_NAME, "CR620"),
		},
		.driver_data = &quirk_load_scm_model,
		.callback = dmi_check_cb
	},
	{
		.ident = "MSI U270",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR,
				"Micro-Star International Co., Ltd."),
			DMI_MATCH(DMI_PRODUCT_NAME, "U270 series"),
		},
		.driver_data = &quirk_load_scm_model,
		.callback = dmi_check_cb
	},
	{
		.ident = "MSI U90/U100",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR,
				"MICRO-STAR INTERNATIONAL CO., LTD"),
			DMI_MATCH(DMI_PRODUCT_NAME, "U90/U100"),
		},
		.driver_data = &quirk_load_scm_ro_model,
		.callback = dmi_check_cb
	},
	{ }
};

static int rfkill_bluetooth_set(void *data, bool blocked)
{
	/* Do something with blocked...*/
	/*
	 * blocked == false is on
	 * blocked == true is off
	 */
	int result = set_device_state(blocked ? "0" : "1", 0,
			MSI_STANDARD_EC_BLUETOOTH_MASK);

	return min(result, 0);
}

static int rfkill_wlan_set(void *data, bool blocked)
{
	int result = set_device_state(blocked ? "0" : "1", 0,
			MSI_STANDARD_EC_WLAN_MASK);

	return min(result, 0);
}

static int rfkill_threeg_set(void *data, bool blocked)
{
	int result = set_device_state(blocked ? "0" : "1", 0,
			MSI_STANDARD_EC_3G_MASK);

	return min(result, 0);
}

static const struct rfkill_ops rfkill_bluetooth_ops = {
	.set_block = rfkill_bluetooth_set
};

static const struct rfkill_ops rfkill_wlan_ops = {
	.set_block = rfkill_wlan_set
};

static const struct rfkill_ops rfkill_threeg_ops = {
	.set_block = rfkill_threeg_set
};

static void rfkill_cleanup(void)
{
	if (rfk_bluetooth) {
		rfkill_unregister(rfk_bluetooth);
		rfkill_destroy(rfk_bluetooth);
	}

	if (rfk_threeg) {
		rfkill_unregister(rfk_threeg);
		rfkill_destroy(rfk_threeg);
	}

	if (rfk_wlan) {
		rfkill_unregister(rfk_wlan);
		rfkill_destroy(rfk_wlan);
	}
}

static bool msi_rfkill_set_state(struct rfkill *rfkill, bool blocked)
{
	if (quirks->ec_read_only)
		return rfkill_set_hw_state(rfkill, blocked);
	else
		return rfkill_set_sw_state(rfkill, blocked);
}

static void msi_update_rfkill(struct work_struct *ignored)
{
	get_wireless_state_ec_standard();

	if (rfk_wlan)
		msi_rfkill_set_state(rfk_wlan, !wlan_s);
	if (rfk_bluetooth)
		msi_rfkill_set_state(rfk_bluetooth, !bluetooth_s);
	if (rfk_threeg)
		msi_rfkill_set_state(rfk_threeg, !threeg_s);
}
static DECLARE_DELAYED_WORK(msi_rfkill_dwork, msi_update_rfkill);
static DECLARE_WORK(msi_rfkill_work, msi_update_rfkill);

static void msi_send_touchpad_key(struct work_struct *ignored)
{
	u8 rdata;
	int result;

	result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
	if (result < 0)
		return;

	sparse_keymap_report_event(msi_laptop_input_dev,
		(rdata & MSI_STANDARD_EC_TOUCHPAD_MASK) ?
		KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF, 1, true);
}
static DECLARE_DELAYED_WORK(msi_touchpad_dwork, msi_send_touchpad_key);
static DECLARE_WORK(msi_touchpad_work, msi_send_touchpad_key);

static bool msi_laptop_i8042_filter(unsigned char data, unsigned char str,
				struct serio *port)
{
	static bool extended;

	if (str & I8042_STR_AUXDATA)
		return false;

	/* 0x54 wwan, 0x62 bluetooth, 0x76 wlan, 0xE4 touchpad toggle*/
	if (unlikely(data == 0xe0)) {
		extended = true;
		return false;
	} else if (unlikely(extended)) {
		extended = false;
		switch (data) {
		case 0xE4:
			if (quirks->ec_delay) {
				schedule_delayed_work(&msi_touchpad_dwork,
					round_jiffies_relative(0.5 * HZ));
			} else
				schedule_work(&msi_touchpad_work);
			break;
		case 0x54:
		case 0x62:
		case 0x76:
			if (quirks->ec_delay) {
				schedule_delayed_work(&msi_rfkill_dwork,
					round_jiffies_relative(0.5 * HZ));
			} else
				schedule_work(&msi_rfkill_work);
			break;
		}
	}

	return false;
}

static void msi_init_rfkill(struct work_struct *ignored)
{
	if (rfk_wlan) {
		rfkill_set_sw_state(rfk_wlan, !wlan_s);
		rfkill_wlan_set(NULL, !wlan_s);
	}
	if (rfk_bluetooth) {
		rfkill_set_sw_state(rfk_bluetooth, !bluetooth_s);
		rfkill_bluetooth_set(NULL, !bluetooth_s);
	}
	if (rfk_threeg) {
		rfkill_set_sw_state(rfk_threeg, !threeg_s);
		rfkill_threeg_set(NULL, !threeg_s);
	}
}
static DECLARE_DELAYED_WORK(msi_rfkill_init, msi_init_rfkill);

static int rfkill_init(struct platform_device *sdev)
{
	/* add rfkill */
	int retval;

	/* keep the hardware wireless state */
	get_wireless_state_ec_standard();

	rfk_bluetooth = rfkill_alloc("msi-bluetooth", &sdev->dev,
				RFKILL_TYPE_BLUETOOTH,
				&rfkill_bluetooth_ops, NULL);
	if (!rfk_bluetooth) {
		retval = -ENOMEM;
		goto err_bluetooth;
	}
	retval = rfkill_register(rfk_bluetooth);
	if (retval)
		goto err_bluetooth;

	rfk_wlan = rfkill_alloc("msi-wlan", &sdev->dev, RFKILL_TYPE_WLAN,
				&rfkill_wlan_ops, NULL);
	if (!rfk_wlan) {
		retval = -ENOMEM;
		goto err_wlan;
	}
	retval = rfkill_register(rfk_wlan);
	if (retval)
		goto err_wlan;

	if (threeg_exists) {
		rfk_threeg = rfkill_alloc("msi-threeg", &sdev->dev,
				RFKILL_TYPE_WWAN, &rfkill_threeg_ops, NULL);
		if (!rfk_threeg) {
			retval = -ENOMEM;
			goto err_threeg;
		}
		retval = rfkill_register(rfk_threeg);
		if (retval)
			goto err_threeg;
	}

	/* schedule to run rfkill state initial */
	if (quirks->ec_delay) {
		schedule_delayed_work(&msi_rfkill_init,
			round_jiffies_relative(1 * HZ));
	} else
		schedule_work(&msi_rfkill_work);

	return 0;

err_threeg:
	rfkill_destroy(rfk_threeg);
	if (rfk_wlan)
		rfkill_unregister(rfk_wlan);
err_wlan:
	rfkill_destroy(rfk_wlan);
	if (rfk_bluetooth)
		rfkill_unregister(rfk_bluetooth);
err_bluetooth:
	rfkill_destroy(rfk_bluetooth);

	return retval;
}

#ifdef CONFIG_PM_SLEEP
static int msi_laptop_resume(struct device *device)
{
	u8 data;
	int result;

	if (!quirks->load_scm_model)
		return 0;

	/* set load SCM to disable hardware control by fn key */
	result = ec_read(MSI_STANDARD_EC_SCM_LOAD_ADDRESS, &data);
	if (result < 0)
		return result;

	result = ec_write(MSI_STANDARD_EC_SCM_LOAD_ADDRESS,
		data | MSI_STANDARD_EC_SCM_LOAD_MASK);
	if (result < 0)
		return result;

	return 0;
}
#endif

static int __init msi_laptop_input_setup(void)
{
	int err;

	msi_laptop_input_dev = input_allocate_device();
	if (!msi_laptop_input_dev)
		return -ENOMEM;

	msi_laptop_input_dev->name = "MSI Laptop hotkeys";
	msi_laptop_input_dev->phys = "msi-laptop/input0";
	msi_laptop_input_dev->id.bustype = BUS_HOST;

	err = sparse_keymap_setup(msi_laptop_input_dev,
		msi_laptop_keymap, NULL);
	if (err)
		goto err_free_dev;

	err = input_register_device(msi_laptop_input_dev);
	if (err)
		goto err_free_dev;

	return 0;

err_free_dev:
	input_free_device(msi_laptop_input_dev);
	return err;
}

static int __init load_scm_model_init(struct platform_device *sdev)
{
	u8 data;
	int result;

	if (!quirks->ec_read_only) {
		/* allow userland write sysfs file  */
		dev_attr_bluetooth.store = store_bluetooth;
		dev_attr_wlan.store = store_wlan;
		dev_attr_threeg.store = store_threeg;
		dev_attr_bluetooth.attr.mode |= S_IWUSR;
		dev_attr_wlan.attr.mode |= S_IWUSR;
		dev_attr_threeg.attr.mode |= S_IWUSR;
	}

	/* disable hardware control by fn key */
	result = ec_read(MSI_STANDARD_EC_SCM_LOAD_ADDRESS, &data);
	if (result < 0)
		return result;

	result = ec_write(MSI_STANDARD_EC_SCM_LOAD_ADDRESS,
		data | MSI_STANDARD_EC_SCM_LOAD_MASK);
	if (result < 0)
		return result;

	/* initial rfkill */
	result = rfkill_init(sdev);
	if (result < 0)
		goto fail_rfkill;

	/* setup input device */
	result = msi_laptop_input_setup();
	if (result)
		goto fail_input;

	result = i8042_install_filter(msi_laptop_i8042_filter);
	if (result) {
		pr_err("Unable to install key filter\n");
		goto fail_filter;
	}

	return 0;

fail_filter:
	input_unregister_device(msi_laptop_input_dev);

fail_input:
	rfkill_cleanup();

fail_rfkill:

	return result;

}

static int __init msi_init(void)
{
	int ret;

	if (acpi_disabled)
		return -ENODEV;

	dmi_check_system(msi_dmi_table);
	if (!quirks)
		/* quirks may be NULL if no match in DMI table */
		quirks = &quirk_load_scm_model;
	if (force)
		quirks = &quirk_old_ec_model;

	if (!quirks->old_ec_model)
		get_threeg_exists();

	if (auto_brightness < 0 || auto_brightness > 2)
		return -EINVAL;

	/* Register backlight stuff */

	if (quirks->old_ec_model ||
	    acpi_video_get_backlight_type() == acpi_backlight_vendor) {
		struct backlight_properties props;
		memset(&props, 0, sizeof(struct backlight_properties));
		props.type = BACKLIGHT_PLATFORM;
		props.max_brightness = MSI_LCD_LEVEL_MAX - 1;
		msibl_device = backlight_device_register("msi-laptop-bl", NULL,
							 NULL, &msibl_ops,
							 &props);
		if (IS_ERR(msibl_device))
			return PTR_ERR(msibl_device);
	}

	ret = platform_driver_register(&msipf_driver);
	if (ret)
		goto fail_backlight;

	/* Register platform stuff */

	msipf_device = platform_device_alloc("msi-laptop-pf", -1);
	if (!msipf_device) {
		ret = -ENOMEM;
		goto fail_platform_driver;
	}

	ret = platform_device_add(msipf_device);
	if (ret)
		goto fail_device_add;

	if (quirks->load_scm_model && (load_scm_model_init(msipf_device) < 0)) {
		ret = -EINVAL;
		goto fail_scm_model_init;
	}

	ret = sysfs_create_group(&msipf_device->dev.kobj,
				 &msipf_attribute_group);
	if (ret)
		goto fail_create_group;

	if (!quirks->old_ec_model) {
		if (threeg_exists)
			ret = device_create_file(&msipf_device->dev,
						&dev_attr_threeg);
		if (ret)
			goto fail_create_attr;
	} else {
		ret = sysfs_create_group(&msipf_device->dev.kobj,
					 &msipf_old_attribute_group);
		if (ret)
			goto fail_create_attr;

		/* Disable automatic brightness control by default because
		 * this module was probably loaded to do brightness control in
		 * software. */

		if (auto_brightness != 2)
			set_auto_brightness(auto_brightness);
	}

	pr_info("driver " MSI_DRIVER_VERSION " successfully loaded\n");

	return 0;

fail_create_attr:
	sysfs_remove_group(&msipf_device->dev.kobj, &msipf_attribute_group);
fail_create_group:
	if (quirks->load_scm_model) {
		i8042_remove_filter(msi_laptop_i8042_filter);
		cancel_delayed_work_sync(&msi_rfkill_dwork);
		cancel_work_sync(&msi_rfkill_work);
		rfkill_cleanup();
	}
fail_scm_model_init:
	platform_device_del(msipf_device);
fail_device_add:
	platform_device_put(msipf_device);
fail_platform_driver:
	platform_driver_unregister(&msipf_driver);
fail_backlight:
	backlight_device_unregister(msibl_device);

	return ret;
}

static void __exit msi_cleanup(void)
{
	if (quirks->load_scm_model) {
		i8042_remove_filter(msi_laptop_i8042_filter);
		input_unregister_device(msi_laptop_input_dev);
		cancel_delayed_work_sync(&msi_rfkill_dwork);
		cancel_work_sync(&msi_rfkill_work);
		rfkill_cleanup();
	}

	sysfs_remove_group(&msipf_device->dev.kobj, &msipf_attribute_group);
	if (!quirks->old_ec_model && threeg_exists)
		device_remove_file(&msipf_device->dev, &dev_attr_threeg);
	platform_device_unregister(msipf_device);
	platform_driver_unregister(&msipf_driver);
	backlight_device_unregister(msibl_device);

	if (quirks->old_ec_model) {
		/* Enable automatic brightness control again */
		if (auto_brightness != 2)
			set_auto_brightness(1);
	}

	pr_info("driver unloaded\n");
}

module_init(msi_init);
module_exit(msi_cleanup);

MODULE_AUTHOR("Lennart Poettering");
MODULE_DESCRIPTION("MSI Laptop Support");
MODULE_VERSION(MSI_DRIVER_VERSION);
MODULE_LICENSE("GPL");

MODULE_ALIAS("dmi:*:svnMICRO-STARINT'LCO.,LTD:pnMS-1013:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1058:pvr0581:rvnMSI:rnMS-1058:*:ct10:*");
MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1412:*:rvnMSI:rnMS-1412:*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
MODULE_ALIAS("dmi:*:svnNOTEBOOK:pnSAM2000:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N034:*");
MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N051:*");
MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N014:*");
MODULE_ALIAS("dmi:*:svnMicro-StarInternational*:pnCR620:*");
MODULE_ALIAS("dmi:*:svnMicro-StarInternational*:pnU270series:*");
MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnU90/U100:*");