summaryrefslogtreecommitdiffstats
path: root/drivers/platform/x86/ideapad-laptop.c
blob: 5b6f18b188012dcc94b19c9156ee54b42650473b (plain)
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
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
/*
 *  ideapad-laptop.c - Lenovo IdeaPad ACPI Extras
 *
 *  Copyright © 2010 Intel Corporation
 *  Copyright © 2010 David Woodhouse <dwmw2@infradead.org>
 *
 *  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.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

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

#define IDEAPAD_RFKILL_DEV_NUM	(3)

#define BM_CONSERVATION_BIT (5)

#define CFG_BT_BIT	(16)
#define CFG_3G_BIT	(17)
#define CFG_WIFI_BIT	(18)
#define CFG_CAMERA_BIT	(19)

#if IS_ENABLED(CONFIG_ACPI_WMI)
static const char *const ideapad_wmi_fnesc_events[] = {
	"26CAB2E5-5CF1-46AE-AAC3-4A12B6BA50E6", /* Yoga 3 */
	"56322276-8493-4CE8-A783-98C991274F5E", /* Yoga 700 */
};
#endif

enum {
	BMCMD_CONSERVATION_ON = 3,
	BMCMD_CONSERVATION_OFF = 5,
};

enum {
	VPCCMD_R_VPC1 = 0x10,
	VPCCMD_R_BL_MAX,
	VPCCMD_R_BL,
	VPCCMD_W_BL,
	VPCCMD_R_WIFI,
	VPCCMD_W_WIFI,
	VPCCMD_R_BT,
	VPCCMD_W_BT,
	VPCCMD_R_BL_POWER,
	VPCCMD_R_NOVO,
	VPCCMD_R_VPC2,
	VPCCMD_R_TOUCHPAD,
	VPCCMD_W_TOUCHPAD,
	VPCCMD_R_CAMERA,
	VPCCMD_W_CAMERA,
	VPCCMD_R_3G,
	VPCCMD_W_3G,
	VPCCMD_R_ODD, /* 0x21 */
	VPCCMD_W_FAN,
	VPCCMD_R_RF,
	VPCCMD_W_RF,
	VPCCMD_R_FAN = 0x2B,
	VPCCMD_R_SPECIAL_BUTTONS = 0x31,
	VPCCMD_W_BL_POWER = 0x33,
};

struct ideapad_rfk_priv {
	int dev;
	struct ideapad_private *priv;
};

struct ideapad_private {
	struct acpi_device *adev;
	struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
	struct ideapad_rfk_priv rfk_priv[IDEAPAD_RFKILL_DEV_NUM];
	struct platform_device *platform_device;
	struct input_dev *inputdev;
	struct backlight_device *blightdev;
	struct dentry *debug;
	unsigned long cfg;
	bool has_hw_rfkill_switch;
	const char *fnesc_guid;
};

static bool no_bt_rfkill;
module_param(no_bt_rfkill, bool, 0444);
MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");

/*
 * ACPI Helpers
 */
#define IDEAPAD_EC_TIMEOUT (100) /* in ms */

static int read_method_int(acpi_handle handle, const char *method, int *val)
{
	acpi_status status;
	unsigned long long result;

	status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
	if (ACPI_FAILURE(status)) {
		*val = -1;
		return -1;
	}
	*val = result;
	return 0;

}

static int method_gbmd(acpi_handle handle, unsigned long *ret)
{
	int result, val;

	result = read_method_int(handle, "GBMD", &val);
	*ret = val;
	return result;
}

static int method_sbmc(acpi_handle handle, int cmd)
{
	acpi_status status;

	status = acpi_execute_simple_method(handle, "SBMC", cmd);
	return ACPI_FAILURE(status) ? -1 : 0;
}

static int method_vpcr(acpi_handle handle, int cmd, int *ret)
{
	acpi_status status;
	unsigned long long result;
	struct acpi_object_list params;
	union acpi_object in_obj;

	params.count = 1;
	params.pointer = &in_obj;
	in_obj.type = ACPI_TYPE_INTEGER;
	in_obj.integer.value = cmd;

	status = acpi_evaluate_integer(handle, "VPCR", &params, &result);

	if (ACPI_FAILURE(status)) {
		*ret = -1;
		return -1;
	}
	*ret = result;
	return 0;

}

static int method_vpcw(acpi_handle handle, int cmd, int data)
{
	struct acpi_object_list params;
	union acpi_object in_obj[2];
	acpi_status status;

	params.count = 2;
	params.pointer = in_obj;
	in_obj[0].type = ACPI_TYPE_INTEGER;
	in_obj[0].integer.value = cmd;
	in_obj[1].type = ACPI_TYPE_INTEGER;
	in_obj[1].integer.value = data;

	status = acpi_evaluate_object(handle, "VPCW", &params, NULL);
	if (status != AE_OK)
		return -1;
	return 0;
}

static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data)
{
	int val;
	unsigned long int end_jiffies;

	if (method_vpcw(handle, 1, cmd))
		return -1;

	for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
	     time_before(jiffies, end_jiffies);) {
		schedule();
		if (method_vpcr(handle, 1, &val))
			return -1;
		if (val == 0) {
			if (method_vpcr(handle, 0, &val))
				return -1;
			*data = val;
			return 0;
		}
	}
	pr_err("timeout in read_ec_cmd\n");
	return -1;
}

static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
{
	int val;
	unsigned long int end_jiffies;

	if (method_vpcw(handle, 0, data))
		return -1;
	if (method_vpcw(handle, 1, cmd))
		return -1;

	for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
	     time_before(jiffies, end_jiffies);) {
		schedule();
		if (method_vpcr(handle, 1, &val))
			return -1;
		if (val == 0)
			return 0;
	}
	pr_err("timeout in %s\n", __func__);
	return -1;
}

/*
 * debugfs
 */
static int debugfs_status_show(struct seq_file *s, void *data)
{
	struct ideapad_private *priv = s->private;
	unsigned long value;

	if (!priv)
		return -EINVAL;

	if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &value))
		seq_printf(s, "Backlight max:\t%lu\n", value);
	if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL, &value))
		seq_printf(s, "Backlight now:\t%lu\n", value);
	if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &value))
		seq_printf(s, "BL power value:\t%s\n", value ? "On" : "Off");
	seq_printf(s, "=====================\n");

	if (!read_ec_data(priv->adev->handle, VPCCMD_R_RF, &value))
		seq_printf(s, "Radio status:\t%s(%lu)\n",
			   value ? "On" : "Off", value);
	if (!read_ec_data(priv->adev->handle, VPCCMD_R_WIFI, &value))
		seq_printf(s, "Wifi status:\t%s(%lu)\n",
			   value ? "On" : "Off", value);
	if (!read_ec_data(priv->adev->handle, VPCCMD_R_BT, &value))
		seq_printf(s, "BT status:\t%s(%lu)\n",
			   value ? "On" : "Off", value);
	if (!read_ec_data(priv->adev->handle, VPCCMD_R_3G, &value))
		seq_printf(s, "3G status:\t%s(%lu)\n",
			   value ? "On" : "Off", value);
	seq_printf(s, "=====================\n");

	if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value))
		seq_printf(s, "Touchpad status:%s(%lu)\n",
			   value ? "On" : "Off", value);
	if (!read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &value))
		seq_printf(s, "Camera status:\t%s(%lu)\n",
			   value ? "On" : "Off", value);
	seq_puts(s, "=====================\n");

	if (!method_gbmd(priv->adev->handle, &value)) {
		seq_printf(s, "Conservation mode:\t%s(%lu)\n",
			   test_bit(BM_CONSERVATION_BIT, &value) ? "On" : "Off",
			   value);
	}

	return 0;
}
DEFINE_SHOW_ATTRIBUTE(debugfs_status);

static int debugfs_cfg_show(struct seq_file *s, void *data)
{
	struct ideapad_private *priv = s->private;

	if (!priv) {
		seq_printf(s, "cfg: N/A\n");
	} else {
		seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ",
			   priv->cfg);
		if (test_bit(CFG_BT_BIT, &priv->cfg))
			seq_printf(s, "Bluetooth ");
		if (test_bit(CFG_3G_BIT, &priv->cfg))
			seq_printf(s, "3G ");
		if (test_bit(CFG_WIFI_BIT, &priv->cfg))
			seq_printf(s, "Wireless ");
		if (test_bit(CFG_CAMERA_BIT, &priv->cfg))
			seq_printf(s, "Camera ");
		seq_printf(s, "\nGraphic: ");
		switch ((priv->cfg)&0x700) {
		case 0x100:
			seq_printf(s, "Intel");
			break;
		case 0x200:
			seq_printf(s, "ATI");
			break;
		case 0x300:
			seq_printf(s, "Nvidia");
			break;
		case 0x400:
			seq_printf(s, "Intel and ATI");
			break;
		case 0x500:
			seq_printf(s, "Intel and Nvidia");
			break;
		}
		seq_printf(s, "\n");
	}
	return 0;
}
DEFINE_SHOW_ATTRIBUTE(debugfs_cfg);

static int ideapad_debugfs_init(struct ideapad_private *priv)
{
	struct dentry *node;

	priv->debug = debugfs_create_dir("ideapad", NULL);
	if (priv->debug == NULL) {
		pr_err("failed to create debugfs directory");
		goto errout;
	}

	node = debugfs_create_file("cfg", S_IRUGO, priv->debug, priv,
				   &debugfs_cfg_fops);
	if (!node) {
		pr_err("failed to create cfg in debugfs");
		goto errout;
	}

	node = debugfs_create_file("status", S_IRUGO, priv->debug, priv,
				   &debugfs_status_fops);
	if (!node) {
		pr_err("failed to create status in debugfs");
		goto errout;
	}

	return 0;

errout:
	return -ENOMEM;
}

static void ideapad_debugfs_exit(struct ideapad_private *priv)
{
	debugfs_remove_recursive(priv->debug);
	priv->debug = NULL;
}

/*
 * sysfs
 */
static ssize_t show_ideapad_cam(struct device *dev,
				struct device_attribute *attr,
				char *buf)
{
	unsigned long result;
	struct ideapad_private *priv = dev_get_drvdata(dev);

	if (read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result))
		return sprintf(buf, "-1\n");
	return sprintf(buf, "%lu\n", result);
}

static ssize_t store_ideapad_cam(struct device *dev,
				 struct device_attribute *attr,
				 const char *buf, size_t count)
{
	int ret, state;
	struct ideapad_private *priv = dev_get_drvdata(dev);

	if (!count)
		return 0;
	if (sscanf(buf, "%i", &state) != 1)
		return -EINVAL;
	ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state);
	if (ret < 0)
		return -EIO;
	return count;
}

static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);

static ssize_t show_ideapad_fan(struct device *dev,
				struct device_attribute *attr,
				char *buf)
{
	unsigned long result;
	struct ideapad_private *priv = dev_get_drvdata(dev);

	if (read_ec_data(priv->adev->handle, VPCCMD_R_FAN, &result))
		return sprintf(buf, "-1\n");
	return sprintf(buf, "%lu\n", result);
}

static ssize_t store_ideapad_fan(struct device *dev,
				 struct device_attribute *attr,
				 const char *buf, size_t count)
{
	int ret, state;
	struct ideapad_private *priv = dev_get_drvdata(dev);

	if (!count)
		return 0;
	if (sscanf(buf, "%i", &state) != 1)
		return -EINVAL;
	if (state < 0 || state > 4 || state == 3)
		return -EINVAL;
	ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state);
	if (ret < 0)
		return -EIO;
	return count;
}

static DEVICE_ATTR(fan_mode, 0644, show_ideapad_fan, store_ideapad_fan);

static ssize_t touchpad_show(struct device *dev,
			     struct device_attribute *attr,
			     char *buf)
{
	struct ideapad_private *priv = dev_get_drvdata(dev);
	unsigned long result;

	if (read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &result))
		return sprintf(buf, "-1\n");
	return sprintf(buf, "%lu\n", result);
}

/* Switch to RO for now: It might be revisited in the future */
static ssize_t __maybe_unused touchpad_store(struct device *dev,
					     struct device_attribute *attr,
					     const char *buf, size_t count)
{
	struct ideapad_private *priv = dev_get_drvdata(dev);
	bool state;
	int ret;

	ret = kstrtobool(buf, &state);
	if (ret)
		return ret;

	ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_TOUCHPAD, state);
	if (ret < 0)
		return -EIO;
	return count;
}

static DEVICE_ATTR_RO(touchpad);

static ssize_t conservation_mode_show(struct device *dev,
				struct device_attribute *attr,
				char *buf)
{
	struct ideapad_private *priv = dev_get_drvdata(dev);
	unsigned long result;

	if (method_gbmd(priv->adev->handle, &result))
		return sprintf(buf, "-1\n");
	return sprintf(buf, "%u\n", test_bit(BM_CONSERVATION_BIT, &result));
}

static ssize_t conservation_mode_store(struct device *dev,
				 struct device_attribute *attr,
				 const char *buf, size_t count)
{
	struct ideapad_private *priv = dev_get_drvdata(dev);
	bool state;
	int ret;

	ret = kstrtobool(buf, &state);
	if (ret)
		return ret;

	ret = method_sbmc(priv->adev->handle, state ?
					      BMCMD_CONSERVATION_ON :
					      BMCMD_CONSERVATION_OFF);
	if (ret < 0)
		return -EIO;
	return count;
}

static DEVICE_ATTR_RW(conservation_mode);

static struct attribute *ideapad_attributes[] = {
	&dev_attr_camera_power.attr,
	&dev_attr_fan_mode.attr,
	&dev_attr_touchpad.attr,
	&dev_attr_conservation_mode.attr,
	NULL
};

static umode_t ideapad_is_visible(struct kobject *kobj,
				 struct attribute *attr,
				 int idx)
{
	struct device *dev = container_of(kobj, struct device, kobj);
	struct ideapad_private *priv = dev_get_drvdata(dev);
	bool supported;

	if (attr == &dev_attr_camera_power.attr)
		supported = test_bit(CFG_CAMERA_BIT, &(priv->cfg));
	else if (attr == &dev_attr_fan_mode.attr) {
		unsigned long value;
		supported = !read_ec_data(priv->adev->handle, VPCCMD_R_FAN,
					  &value);
	} else if (attr == &dev_attr_conservation_mode.attr) {
		supported = acpi_has_method(priv->adev->handle, "GBMD") &&
			    acpi_has_method(priv->adev->handle, "SBMC");
	} else
		supported = true;

	return supported ? attr->mode : 0;
}

static const struct attribute_group ideapad_attribute_group = {
	.is_visible = ideapad_is_visible,
	.attrs = ideapad_attributes
};

/*
 * Rfkill
 */
struct ideapad_rfk_data {
	char *name;
	int cfgbit;
	int opcode;
	int type;
};

static const struct ideapad_rfk_data ideapad_rfk_data[] = {
	{ "ideapad_wlan",    CFG_WIFI_BIT, VPCCMD_W_WIFI, RFKILL_TYPE_WLAN },
	{ "ideapad_bluetooth", CFG_BT_BIT, VPCCMD_W_BT, RFKILL_TYPE_BLUETOOTH },
	{ "ideapad_3g",        CFG_3G_BIT, VPCCMD_W_3G, RFKILL_TYPE_WWAN },
};

static int ideapad_rfk_set(void *data, bool blocked)
{
	struct ideapad_rfk_priv *priv = data;
	int opcode = ideapad_rfk_data[priv->dev].opcode;

	return write_ec_cmd(priv->priv->adev->handle, opcode, !blocked);
}

static const struct rfkill_ops ideapad_rfk_ops = {
	.set_block = ideapad_rfk_set,
};

static void ideapad_sync_rfk_state(struct ideapad_private *priv)
{
	unsigned long hw_blocked = 0;
	int i;

	if (priv->has_hw_rfkill_switch) {
		if (read_ec_data(priv->adev->handle, VPCCMD_R_RF, &hw_blocked))
			return;
		hw_blocked = !hw_blocked;
	}

	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
		if (priv->rfk[i])
			rfkill_set_hw_state(priv->rfk[i], hw_blocked);
}

static int ideapad_register_rfkill(struct ideapad_private *priv, int dev)
{
	int ret;
	unsigned long sw_blocked;

	if (no_bt_rfkill &&
	    (ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH)) {
		/* Force to enable bluetooth when no_bt_rfkill=1 */
		write_ec_cmd(priv->adev->handle,
			     ideapad_rfk_data[dev].opcode, 1);
		return 0;
	}
	priv->rfk_priv[dev].dev = dev;
	priv->rfk_priv[dev].priv = priv;

	priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name,
				      &priv->platform_device->dev,
				      ideapad_rfk_data[dev].type,
				      &ideapad_rfk_ops,
				      &priv->rfk_priv[dev]);
	if (!priv->rfk[dev])
		return -ENOMEM;

	if (read_ec_data(priv->adev->handle, ideapad_rfk_data[dev].opcode-1,
			 &sw_blocked)) {
		rfkill_init_sw_state(priv->rfk[dev], 0);
	} else {
		sw_blocked = !sw_blocked;
		rfkill_init_sw_state(priv->rfk[dev], sw_blocked);
	}

	ret = rfkill_register(priv->rfk[dev]);
	if (ret) {
		rfkill_destroy(priv->rfk[dev]);
		return ret;
	}
	return 0;
}

static void ideapad_unregister_rfkill(struct ideapad_private *priv, int dev)
{
	if (!priv->rfk[dev])
		return;

	rfkill_unregister(priv->rfk[dev]);
	rfkill_destroy(priv->rfk[dev]);
}

/*
 * Platform device
 */
static int ideapad_sysfs_init(struct ideapad_private *priv)
{
	return sysfs_create_group(&priv->platform_device->dev.kobj,
				    &ideapad_attribute_group);
}

static void ideapad_sysfs_exit(struct ideapad_private *priv)
{
	sysfs_remove_group(&priv->platform_device->dev.kobj,
			   &ideapad_attribute_group);
}

/*
 * input device
 */
static const struct key_entry ideapad_keymap[] = {
	{ KE_KEY, 6,  { KEY_SWITCHVIDEOMODE } },
	{ KE_KEY, 7,  { KEY_CAMERA } },
	{ KE_KEY, 8,  { KEY_MICMUTE } },
	{ KE_KEY, 11, { KEY_F16 } },
	{ KE_KEY, 13, { KEY_WLAN } },
	{ KE_KEY, 16, { KEY_PROG1 } },
	{ KE_KEY, 17, { KEY_PROG2 } },
	{ KE_KEY, 64, { KEY_PROG3 } },
	{ KE_KEY, 65, { KEY_PROG4 } },
	{ KE_KEY, 66, { KEY_TOUCHPAD_OFF } },
	{ KE_KEY, 67, { KEY_TOUCHPAD_ON } },
	{ KE_KEY, 128, { KEY_ESC } },

	{ KE_END, 0 },
};

static int ideapad_input_init(struct ideapad_private *priv)
{
	struct input_dev *inputdev;
	int error;

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

	inputdev->name = "Ideapad extra buttons";
	inputdev->phys = "ideapad/input0";
	inputdev->id.bustype = BUS_HOST;
	inputdev->dev.parent = &priv->platform_device->dev;

	error = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
	if (error) {
		pr_err("Unable to setup input device keymap\n");
		goto err_free_dev;
	}

	error = input_register_device(inputdev);
	if (error) {
		pr_err("Unable to register input device\n");
		goto err_free_dev;
	}

	priv->inputdev = inputdev;
	return 0;

err_free_dev:
	input_free_device(inputdev);
	return error;
}

static void ideapad_input_exit(struct ideapad_private *priv)
{
	input_unregister_device(priv->inputdev);
	priv->inputdev = NULL;
}

static void ideapad_input_report(struct ideapad_private *priv,
				 unsigned long scancode)
{
	sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
}

static void ideapad_input_novokey(struct ideapad_private *priv)
{
	unsigned long long_pressed;

	if (read_ec_data(priv->adev->handle, VPCCMD_R_NOVO, &long_pressed))
		return;
	if (long_pressed)
		ideapad_input_report(priv, 17);
	else
		ideapad_input_report(priv, 16);
}

static void ideapad_check_special_buttons(struct ideapad_private *priv)
{
	unsigned long bit, value;

	read_ec_data(priv->adev->handle, VPCCMD_R_SPECIAL_BUTTONS, &value);

	for (bit = 0; bit < 16; bit++) {
		if (test_bit(bit, &value)) {
			switch (bit) {
			case 0:	/* Z580 */
			case 6:	/* Z570 */
				/* Thermal Management button */
				ideapad_input_report(priv, 65);
				break;
			case 1:
				/* OneKey Theater button */
				ideapad_input_report(priv, 64);
				break;
			default:
				pr_info("Unknown special button: %lu\n", bit);
				break;
			}
		}
	}
}

/*
 * backlight
 */
static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
{
	struct ideapad_private *priv = bl_get_data(blightdev);
	unsigned long now;

	if (!priv)
		return -EINVAL;

	if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
		return -EIO;
	return now;
}

static int ideapad_backlight_update_status(struct backlight_device *blightdev)
{
	struct ideapad_private *priv = bl_get_data(blightdev);

	if (!priv)
		return -EINVAL;

	if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL,
			 blightdev->props.brightness))
		return -EIO;
	if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL_POWER,
			 blightdev->props.power == FB_BLANK_POWERDOWN ? 0 : 1))
		return -EIO;

	return 0;
}

static const struct backlight_ops ideapad_backlight_ops = {
	.get_brightness = ideapad_backlight_get_brightness,
	.update_status = ideapad_backlight_update_status,
};

static int ideapad_backlight_init(struct ideapad_private *priv)
{
	struct backlight_device *blightdev;
	struct backlight_properties props;
	unsigned long max, now, power;

	if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &max))
		return -EIO;
	if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
		return -EIO;
	if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
		return -EIO;

	memset(&props, 0, sizeof(struct backlight_properties));
	props.max_brightness = max;
	props.type = BACKLIGHT_PLATFORM;
	blightdev = backlight_device_register("ideapad",
					      &priv->platform_device->dev,
					      priv,
					      &ideapad_backlight_ops,
					      &props);
	if (IS_ERR(blightdev)) {
		pr_err("Could not register backlight device\n");
		return PTR_ERR(blightdev);
	}

	priv->blightdev = blightdev;
	blightdev->props.brightness = now;
	blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
	backlight_update_status(blightdev);

	return 0;
}

static void ideapad_backlight_exit(struct ideapad_private *priv)
{
	backlight_device_unregister(priv->blightdev);
	priv->blightdev = NULL;
}

static void ideapad_backlight_notify_power(struct ideapad_private *priv)
{
	unsigned long power;
	struct backlight_device *blightdev = priv->blightdev;

	if (!blightdev)
		return;
	if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
		return;
	blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
}

static void ideapad_backlight_notify_brightness(struct ideapad_private *priv)
{
	unsigned long now;

	/* if we control brightness via acpi video driver */
	if (priv->blightdev == NULL) {
		read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
		return;
	}

	backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY);
}

/*
 * module init/exit
 */
static void ideapad_sync_touchpad_state(struct ideapad_private *priv)
{
	unsigned long value;

	/* Without reading from EC touchpad LED doesn't switch state */
	if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value)) {
		/* Some IdeaPads don't really turn off touchpad - they only
		 * switch the LED state. We (de)activate KBC AUX port to turn
		 * touchpad off and on. We send KEY_TOUCHPAD_OFF and
		 * KEY_TOUCHPAD_ON to not to get out of sync with LED */
		unsigned char param;
		i8042_command(&param, value ? I8042_CMD_AUX_ENABLE :
			      I8042_CMD_AUX_DISABLE);
		ideapad_input_report(priv, value ? 67 : 66);
	}
}

static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
{
	struct ideapad_private *priv = data;
	unsigned long vpc1, vpc2, vpc_bit;

	if (read_ec_data(handle, VPCCMD_R_VPC1, &vpc1))
		return;
	if (read_ec_data(handle, VPCCMD_R_VPC2, &vpc2))
		return;

	vpc1 = (vpc2 << 8) | vpc1;
	for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) {
		if (test_bit(vpc_bit, &vpc1)) {
			switch (vpc_bit) {
			case 9:
				ideapad_sync_rfk_state(priv);
				break;
			case 13:
			case 11:
			case 8:
			case 7:
			case 6:
				ideapad_input_report(priv, vpc_bit);
				break;
			case 5:
				ideapad_sync_touchpad_state(priv);
				break;
			case 4:
				ideapad_backlight_notify_brightness(priv);
				break;
			case 3:
				ideapad_input_novokey(priv);
				break;
			case 2:
				ideapad_backlight_notify_power(priv);
				break;
			case 0:
				ideapad_check_special_buttons(priv);
				break;
			case 1:
				/* Some IdeaPads report event 1 every ~20
				 * seconds while on battery power; some
				 * report this when changing to/from tablet
				 * mode. Squelch this event.
				 */
				break;
			default:
				pr_info("Unknown event: %lu\n", vpc_bit);
			}
		}
	}
}

#if IS_ENABLED(CONFIG_ACPI_WMI)
static void ideapad_wmi_notify(u32 value, void *context)
{
	switch (value) {
	case 128:
		ideapad_input_report(context, value);
		break;
	default:
		pr_info("Unknown WMI event %u\n", value);
	}
}
#endif

/*
 * Some ideapads don't have a hardware rfkill switch, reading VPCCMD_R_RF
 * always results in 0 on these models, causing ideapad_laptop to wrongly
 * report all radios as hardware-blocked.
 */
static const struct dmi_system_id no_hw_rfkill_list[] = {
	{
		.ident = "Lenovo RESCUER R720-15IKBN",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_BOARD_NAME, "80WW"),
		},
	},
	{
		.ident = "Lenovo G40-30",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo G40-30"),
		},
	},
	{
		.ident = "Lenovo G50-30",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo G50-30"),
		},
	},
	{
		.ident = "Lenovo V310-14IKB",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-14IKB"),
		},
	},
	{
		.ident = "Lenovo V310-14ISK",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-14ISK"),
		},
	},
	{
		.ident = "Lenovo V310-15IKB",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-15IKB"),
		},
	},
	{
		.ident = "Lenovo V310-15ISK",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V310-15ISK"),
		},
	},
	{
		.ident = "Lenovo V510-15IKB",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo V510-15IKB"),
		},
	},
	{
		.ident = "Lenovo ideapad 300-15IBR",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 300-15IBR"),
		},
	},
	{
		.ident = "Lenovo ideapad 300-15IKB",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 300-15IKB"),
		},
	},
	{
		.ident = "Lenovo ideapad 300S-11IBR",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 300S-11BR"),
		},
	},
	{
		.ident = "Lenovo ideapad 310-15ABR",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15ABR"),
		},
	},
	{
		.ident = "Lenovo ideapad 310-15IAP",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15IAP"),
		},
	},
	{
		.ident = "Lenovo ideapad 310-15IKB",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15IKB"),
		},
	},
	{
		.ident = "Lenovo ideapad 310-15ISK",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad 310-15ISK"),
		},
	},
	{
		.ident = "Lenovo ideapad Y700-14ISK",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-14ISK"),
		},
	},
	{
		.ident = "Lenovo ideapad Y700-15ACZ",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-15ACZ"),
		},
	},
	{
		.ident = "Lenovo ideapad Y700-15ISK",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-15ISK"),
		},
	},
	{
		.ident = "Lenovo ideapad Y700 Touch-15ISK",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700 Touch-15ISK"),
		},
	},
	{
		.ident = "Lenovo ideapad Y700-17ISK",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad Y700-17ISK"),
		},
	},
	{
		.ident = "Lenovo Legion Y520-15IKBN",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y520-15IKBN"),
		},
	},
	{
		.ident = "Lenovo Legion Y720-15IKB",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y720-15IKB"),
		},
	},
	{
		.ident = "Lenovo Legion Y720-15IKBN",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y720-15IKBN"),
		},
	},
	{
		.ident = "Lenovo Yoga 2 11 / 13 / Pro",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 2"),
		},
	},
	{
		.ident = "Lenovo Yoga 2 11 / 13 / Pro",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_BOARD_NAME, "Yoga2"),
		},
	},
	{
		.ident = "Lenovo Yoga 3 1170 / 1470",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 3"),
		},
	},
	{
		.ident = "Lenovo Yoga 3 Pro 1370",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 3"),
		},
	},
	{
		.ident = "Lenovo Yoga 700",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 700"),
		},
	},
	{
		.ident = "Lenovo Yoga 900",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 900"),
		},
	},
	{
		.ident = "Lenovo Yoga 900",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_BOARD_NAME, "VIUU4"),
		},
	},
	{
		.ident = "Lenovo YOGA 910-13IKB",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 910-13IKB"),
		},
	},
	{
		.ident = "Lenovo YOGA 920-13IKB",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 920-13IKB"),
		},
	},
	{}
};

static int ideapad_acpi_add(struct platform_device *pdev)
{
	int ret, i;
	int cfg;
	struct ideapad_private *priv;
	struct acpi_device *adev;

	ret = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev);
	if (ret)
		return -ENODEV;

	if (read_method_int(adev->handle, "_CFG", &cfg))
		return -ENODEV;

	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	dev_set_drvdata(&pdev->dev, priv);
	priv->cfg = cfg;
	priv->adev = adev;
	priv->platform_device = pdev;
	priv->has_hw_rfkill_switch = !dmi_check_system(no_hw_rfkill_list);

	ret = ideapad_sysfs_init(priv);
	if (ret)
		return ret;

	ret = ideapad_debugfs_init(priv);
	if (ret)
		goto debugfs_failed;

	ret = ideapad_input_init(priv);
	if (ret)
		goto input_failed;

	/*
	 * On some models without a hw-switch (the yoga 2 13 at least)
	 * VPCCMD_W_RF must be explicitly set to 1 for the wifi to work.
	 */
	if (!priv->has_hw_rfkill_switch)
		write_ec_cmd(priv->adev->handle, VPCCMD_W_RF, 1);

	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
		if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg))
			ideapad_register_rfkill(priv, i);

	ideapad_sync_rfk_state(priv);
	ideapad_sync_touchpad_state(priv);

	if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
		ret = ideapad_backlight_init(priv);
		if (ret && ret != -ENODEV)
			goto backlight_failed;
	}
	ret = acpi_install_notify_handler(adev->handle,
		ACPI_DEVICE_NOTIFY, ideapad_acpi_notify, priv);
	if (ret)
		goto notification_failed;

#if IS_ENABLED(CONFIG_ACPI_WMI)
	for (i = 0; i < ARRAY_SIZE(ideapad_wmi_fnesc_events); i++) {
		ret = wmi_install_notify_handler(ideapad_wmi_fnesc_events[i],
						 ideapad_wmi_notify, priv);
		if (ret == AE_OK) {
			priv->fnesc_guid = ideapad_wmi_fnesc_events[i];
			break;
		}
	}
	if (ret != AE_OK && ret != AE_NOT_EXIST)
		goto notification_failed_wmi;
#endif

	return 0;
#if IS_ENABLED(CONFIG_ACPI_WMI)
notification_failed_wmi:
	acpi_remove_notify_handler(priv->adev->handle,
		ACPI_DEVICE_NOTIFY, ideapad_acpi_notify);
#endif
notification_failed:
	ideapad_backlight_exit(priv);
backlight_failed:
	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
		ideapad_unregister_rfkill(priv, i);
	ideapad_input_exit(priv);
input_failed:
	ideapad_debugfs_exit(priv);
debugfs_failed:
	ideapad_sysfs_exit(priv);
	return ret;
}

static int ideapad_acpi_remove(struct platform_device *pdev)
{
	struct ideapad_private *priv = dev_get_drvdata(&pdev->dev);
	int i;

#if IS_ENABLED(CONFIG_ACPI_WMI)
	if (priv->fnesc_guid)
		wmi_remove_notify_handler(priv->fnesc_guid);
#endif
	acpi_remove_notify_handler(priv->adev->handle,
		ACPI_DEVICE_NOTIFY, ideapad_acpi_notify);
	ideapad_backlight_exit(priv);
	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
		ideapad_unregister_rfkill(priv, i);
	ideapad_input_exit(priv);
	ideapad_debugfs_exit(priv);
	ideapad_sysfs_exit(priv);
	dev_set_drvdata(&pdev->dev, NULL);

	return 0;
}

#ifdef CONFIG_PM_SLEEP
static int ideapad_acpi_resume(struct device *device)
{
	struct ideapad_private *priv;

	if (!device)
		return -EINVAL;
	priv = dev_get_drvdata(device);

	ideapad_sync_rfk_state(priv);
	ideapad_sync_touchpad_state(priv);
	return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(ideapad_pm, NULL, ideapad_acpi_resume);

static const struct acpi_device_id ideapad_device_ids[] = {
	{ "VPC2004", 0},
	{ "", 0},
};
MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);

static struct platform_driver ideapad_acpi_driver = {
	.probe = ideapad_acpi_add,
	.remove = ideapad_acpi_remove,
	.driver = {
		.name   = "ideapad_acpi",
		.pm     = &ideapad_pm,
		.acpi_match_table = ACPI_PTR(ideapad_device_ids),
	},
};

module_platform_driver(ideapad_acpi_driver);

MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
MODULE_DESCRIPTION("IdeaPad ACPI Extras");
MODULE_LICENSE("GPL");
OpenPOWER on IntegriCloud