aboutsummaryrefslogtreecommitdiffstats
path: root/sound/soc/codecs/twl6040.c
blob: 9b9a6e587610540c310c39387791f588592e1a4c (plain) (blame)
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
/*
 * ALSA SoC TWL6040 codec driver
 *
 * Author:	 Misael Lopez Cruz <x0052729@ti.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * 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 St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/mfd/twl6040.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>

#include "twl6040.h"

#define TWL6040_RATES		SNDRV_PCM_RATE_8000_96000
#define TWL6040_FORMATS	(SNDRV_PCM_FMTBIT_S32_LE)

#define TWL6040_OUTHS_0dB 0x00
#define TWL6040_OUTHS_M30dB 0x0F
#define TWL6040_OUTHF_0dB 0x03
#define TWL6040_OUTHF_M52dB 0x1D

/* Shadow register used by the driver */
#define TWL6040_REG_SW_SHADOW	0x2F
#define TWL6040_CACHEREGNUM	(TWL6040_REG_SW_SHADOW + 1)

/* TWL6040_REG_SW_SHADOW (0x2F) fields */
#define TWL6040_EAR_PATH_ENABLE	0x01

struct twl6040_jack_data {
	struct snd_soc_jack *jack;
	struct delayed_work work;
	int report;
};

/* codec private data */
struct twl6040_data {
	int plug_irq;
	int codec_powered;
	int pll;
	int pll_power_mode;
	int hs_power_mode;
	int hs_power_mode_locked;
	unsigned int clk_in;
	unsigned int sysclk;
	struct twl6040_jack_data hs_jack;
	struct snd_soc_codec *codec;
	struct mutex mutex;
};

/*
 * twl6040 register cache & default register settings
 */
static const u8 twl6040_reg[TWL6040_CACHEREGNUM] = {
	0x00, /* not used	0x00	*/
	0x4B, /* REG_ASICID	0x01 (ro) */
	0x00, /* REG_ASICREV	0x02 (ro) */
	0x00, /* REG_INTID	0x03	*/
	0x00, /* REG_INTMR	0x04	*/
	0x00, /* REG_NCPCTRL	0x05	*/
	0x00, /* REG_LDOCTL	0x06	*/
	0x60, /* REG_HPPLLCTL	0x07	*/
	0x00, /* REG_LPPLLCTL	0x08	*/
	0x4A, /* REG_LPPLLDIV	0x09	*/
	0x00, /* REG_AMICBCTL	0x0A	*/
	0x00, /* REG_DMICBCTL	0x0B	*/
	0x00, /* REG_MICLCTL	0x0C	*/
	0x00, /* REG_MICRCTL	0x0D	*/
	0x00, /* REG_MICGAIN	0x0E	*/
	0x1B, /* REG_LINEGAIN	0x0F	*/
	0x00, /* REG_HSLCTL	0x10	*/
	0x00, /* REG_HSRCTL	0x11	*/
	0x00, /* REG_HSGAIN	0x12	*/
	0x00, /* REG_EARCTL	0x13	*/
	0x00, /* REG_HFLCTL	0x14	*/
	0x00, /* REG_HFLGAIN	0x15	*/
	0x00, /* REG_HFRCTL	0x16	*/
	0x00, /* REG_HFRGAIN	0x17	*/
	0x00, /* REG_VIBCTLL	0x18	*/
	0x00, /* REG_VIBDATL	0x19	*/
	0x00, /* REG_VIBCTLR	0x1A	*/
	0x00, /* REG_VIBDATR	0x1B	*/
	0x00, /* REG_HKCTL1	0x1C	*/
	0x00, /* REG_HKCTL2	0x1D	*/
	0x00, /* REG_GPOCTL	0x1E	*/
	0x00, /* REG_ALB	0x1F	*/
	0x00, /* REG_DLB	0x20	*/
	0x00, /* not used	0x21	*/
	0x00, /* not used	0x22	*/
	0x00, /* not used	0x23	*/
	0x00, /* not used	0x24	*/
	0x00, /* not used	0x25	*/
	0x00, /* not used	0x26	*/
	0x00, /* not used	0x27	*/
	0x00, /* REG_TRIM1	0x28	*/
	0x00, /* REG_TRIM2	0x29	*/
	0x00, /* REG_TRIM3	0x2A	*/
	0x00, /* REG_HSOTRIM	0x2B	*/
	0x00, /* REG_HFOTRIM	0x2C	*/
	0x09, /* REG_ACCCTL	0x2D	*/
	0x00, /* REG_STATUS	0x2E (ro) */

	0x00, /* REG_SW_SHADOW	0x2F - Shadow, non HW register */
};

/* List of registers to be restored after power up */
static const int twl6040_restore_list[] = {
	TWL6040_REG_MICLCTL,
	TWL6040_REG_MICRCTL,
	TWL6040_REG_MICGAIN,
	TWL6040_REG_LINEGAIN,
	TWL6040_REG_HSLCTL,
	TWL6040_REG_HSRCTL,
	TWL6040_REG_HSGAIN,
	TWL6040_REG_EARCTL,
	TWL6040_REG_HFLCTL,
	TWL6040_REG_HFLGAIN,
	TWL6040_REG_HFRCTL,
	TWL6040_REG_HFRGAIN,
};

/* set of rates for each pll: low-power and high-performance */
static unsigned int lp_rates[] = {
	8000,
	11250,
	16000,
	22500,
	32000,
	44100,
	48000,
	88200,
	96000,
};

static unsigned int hp_rates[] = {
	8000,
	16000,
	32000,
	48000,
	96000,
};

static struct snd_pcm_hw_constraint_list sysclk_constraints[] = {
	{ .count = ARRAY_SIZE(lp_rates), .list = lp_rates, },
	{ .count = ARRAY_SIZE(hp_rates), .list = hp_rates, },
};

/*
 * read twl6040 register cache
 */
static inline unsigned int twl6040_read_reg_cache(struct snd_soc_codec *codec,
						unsigned int reg)
{
	u8 *cache = codec->reg_cache;

	if (reg >= TWL6040_CACHEREGNUM)
		return -EIO;

	return cache[reg];
}

/*
 * write twl6040 register cache
 */
static inline void twl6040_write_reg_cache(struct snd_soc_codec *codec,
						u8 reg, u8 value)
{
	u8 *cache = codec->reg_cache;

	if (reg >= TWL6040_CACHEREGNUM)
		return;
	cache[reg] = value;
}

/*
 * read from twl6040 hardware register
 */
static int twl6040_read_reg_volatile(struct snd_soc_codec *codec,
			unsigned int reg)
{
	struct twl6040 *twl6040 = codec->control_data;
	u8 value;

	if (reg >= TWL6040_CACHEREGNUM)
		return -EIO;

	if (likely(reg < TWL6040_REG_SW_SHADOW)) {
		value = twl6040_reg_read(twl6040, reg);
		twl6040_write_reg_cache(codec, reg, value);
	} else {
		value = twl6040_read_reg_cache(codec, reg);
	}

	return value;
}

/*
 * write to the twl6040 register space
 */
static int twl6040_write(struct snd_soc_codec *codec,
			unsigned int reg, unsigned int value)
{
	struct twl6040 *twl6040 = codec->control_data;

	if (reg >= TWL6040_CACHEREGNUM)
		return -EIO;

	twl6040_write_reg_cache(codec, reg, value);
	if (likely(reg < TWL6040_REG_SW_SHADOW))
		return twl6040_reg_write(twl6040, reg, value);
	else
		return 0;
}

static void twl6040_init_chip(struct snd_soc_codec *codec)
{
	struct twl6040 *twl6040 = codec->control_data;
	u8 val;

	/* Update reg_cache: ASICREV, and TRIM values */
	val = twl6040_get_revid(twl6040);
	twl6040_write_reg_cache(codec, TWL6040_REG_ASICREV, val);

	twl6040_read_reg_volatile(codec, TWL6040_REG_TRIM1);
	twl6040_read_reg_volatile(codec, TWL6040_REG_TRIM2);
	twl6040_read_reg_volatile(codec, TWL6040_REG_TRIM3);
	twl6040_read_reg_volatile(codec, TWL6040_REG_HSOTRIM);
	twl6040_read_reg_volatile(codec, TWL6040_REG_HFOTRIM);

	/* Change chip defaults */
	/* No imput selected for microphone amplifiers */
	twl6040_write_reg_cache(codec, TWL6040_REG_MICLCTL, 0x18);
	twl6040_write_reg_cache(codec, TWL6040_REG_MICRCTL, 0x18);

	/*
	 * We need to lower the default gain values, so the ramp code
	 * can work correctly for the first playback.
	 * This reduces the pop noise heard at the first playback.
	 */
	twl6040_write_reg_cache(codec, TWL6040_REG_HSGAIN, 0xff);
	twl6040_write_reg_cache(codec, TWL6040_REG_EARCTL, 0x1e);
	twl6040_write_reg_cache(codec, TWL6040_REG_HFLGAIN, 0x1d);
	twl6040_write_reg_cache(codec, TWL6040_REG_HFRGAIN, 0x1d);
	twl6040_write_reg_cache(codec, TWL6040_REG_LINEGAIN, 0);
}

static void twl6040_restore_regs(struct snd_soc_codec *codec)
{
	u8 *cache = codec->reg_cache;
	int reg, i;

	for (i = 0; i < ARRAY_SIZE(twl6040_restore_list); i++) {
		reg = twl6040_restore_list[i];
		twl6040_write(codec, reg, cache[reg]);
	}
}

/* set headset dac and driver power mode */
static int headset_power_mode(struct snd_soc_codec *codec, int high_perf)
{
	int hslctl, hsrctl;
	int mask = TWL6040_HSDRVMODE | TWL6040_HSDACMODE;

	hslctl = twl6040_read_reg_cache(codec, TWL6040_REG_HSLCTL);
	hsrctl = twl6040_read_reg_cache(codec, TWL6040_REG_HSRCTL);

	if (high_perf) {
		hslctl &= ~mask;
		hsrctl &= ~mask;
	} else {
		hslctl |= mask;
		hsrctl |= mask;
	}

	twl6040_write(codec, TWL6040_REG_HSLCTL, hslctl);
	twl6040_write(codec, TWL6040_REG_HSRCTL, hsrctl);

	return 0;
}

static int twl6040_hs_dac_event(struct snd_soc_dapm_widget *w,
			struct snd_kcontrol *kcontrol, int event)
{
	struct snd_soc_codec *codec = w->codec;
	u8 hslctl, hsrctl;

	/*
	 * Workaround for Headset DC offset caused pop noise:
	 * Both HS DAC need to be turned on (before the HS driver) and off at
	 * the same time.
	 */
	hslctl = twl6040_read_reg_cache(codec, TWL6040_REG_HSLCTL);
	hsrctl = twl6040_read_reg_cache(codec, TWL6040_REG_HSRCTL);
	if (SND_SOC_DAPM_EVENT_ON(event)) {
		hslctl |= TWL6040_HSDACENA;
		hsrctl |= TWL6040_HSDACENA;
	} else {
		hslctl &= ~TWL6040_HSDACENA;
		hsrctl &= ~TWL6040_HSDACENA;
	}
	twl6040_write(codec, TWL6040_REG_HSLCTL, hslctl);
	twl6040_write(codec, TWL6040_REG_HSRCTL, hsrctl);

	msleep(1);
	return 0;
}

static int twl6040_ep_drv_event(struct snd_soc_dapm_widget *w,
			struct snd_kcontrol *kcontrol, int event)
{
	struct snd_soc_codec *codec = w->codec;
	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
	int ret = 0;

	if (SND_SOC_DAPM_EVENT_ON(event)) {
		/* Earphone doesn't support low power mode */
		priv->hs_power_mode_locked = 1;
		ret = headset_power_mode(codec, 1);
	} else {
		priv->hs_power_mode_locked = 0;
		ret = headset_power_mode(codec, priv->hs_power_mode);
	}

	msleep(1);

	return ret;
}

static void twl6040_hs_jack_report(struct snd_soc_codec *codec,
				   struct snd_soc_jack *jack, int report)
{
	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
	int status;

	mutex_lock(&priv->mutex);

	/* Sync status */
	status = twl6040_read_reg_volatile(codec, TWL6040_REG_STATUS);
	if (status & TWL6040_PLUGCOMP)
		snd_soc_jack_report(jack, report, report);
	else
		snd_soc_jack_report(jack, 0, report);

	mutex_unlock(&priv->mutex);
}

void twl6040_hs_jack_detect(struct snd_soc_codec *codec,
				struct snd_soc_jack *jack, int report)
{
	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
	struct twl6040_jack_data *hs_jack = &priv->hs_jack;

	hs_jack->jack = jack;
	hs_jack->report = report;

	twl6040_hs_jack_report(codec, hs_jack->jack, hs_jack->report);
}
EXPORT_SYMBOL_GPL(twl6040_hs_jack_detect);

static void twl6040_accessory_work(struct work_struct *work)
{
	struct twl6040_data *priv = container_of(work,
					struct twl6040_data, hs_jack.work.work);
	struct snd_soc_codec *codec = priv->codec;
	struct twl6040_jack_data *hs_jack = &priv->hs_jack;

	twl6040_hs_jack_report(codec, hs_jack->jack, hs_jack->report);
}

/* audio interrupt handler */
static irqreturn_t twl6040_audio_handler(int irq, void *data)
{
	struct snd_soc_codec *codec = data;
	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);

	schedule_delayed_work(&priv->hs_jack.work, msecs_to_jiffies(200));

	return IRQ_HANDLED;
}

static int twl6040_soc_dapm_put_vibra_enum(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
	struct snd_soc_dapm_widget *widget = wlist->widgets[0];
	struct snd_soc_codec *codec = widget->codec;
	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
	unsigned int val;

	/* Do not allow changes while Input/FF efect is running */
	val = twl6040_read_reg_volatile(codec, e->reg);
	if (val & TWL6040_VIBENA && !(val & TWL6040_VIBSEL))
		return -EBUSY;

	return snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
}

/*
 * MICATT volume control:
 * from -6 to 0 dB in 6 dB steps
 */
static DECLARE_TLV_DB_SCALE(mic_preamp_tlv, -600, 600, 0);

/*
 * MICGAIN volume control:
 * from 6 to 30 dB in 6 dB steps
 */
static DECLARE_TLV_DB_SCALE(mic_amp_tlv, 600, 600, 0);

/*
 * AFMGAIN volume control:
 * from -18 to 24 dB in 6 dB steps
 */
static DECLARE_TLV_DB_SCALE(afm_amp_tlv, -1800, 600, 0);

/*
 * HSGAIN volume control:
 * from -30 to 0 dB in 2 dB steps
 */
static DECLARE_TLV_DB_SCALE(hs_tlv, -3000, 200, 0);

/*
 * HFGAIN volume control:
 * from -52 to 6 dB in 2 dB steps
 */
static DECLARE_TLV_DB_SCALE(hf_tlv, -5200, 200, 0);

/*
 * EPGAIN volume control:
 * from -24 to 6 dB in 2 dB steps
 */
static DECLARE_TLV_DB_SCALE(ep_tlv, -2400, 200, 0);

/* Left analog microphone selection */
static const char *twl6040_amicl_texts[] =
	{"Headset Mic", "Main Mic", "Aux/FM Left", "Off"};

/* Right analog microphone selection */
static const char *twl6040_amicr_texts[] =
	{"Headset Mic", "Sub Mic", "Aux/FM Right", "Off"};

static const struct soc_enum twl6040_enum[] = {
	SOC_ENUM_SINGLE(TWL6040_REG_MICLCTL, 3, 4, twl6040_amicl_texts),
	SOC_ENUM_SINGLE(TWL6040_REG_MICRCTL, 3, 4, twl6040_amicr_texts),
};

static const char *twl6040_hs_texts[] = {
	"Off", "HS DAC", "Line-In amp"
};

static const struct soc_enum twl6040_hs_enum[] = {
	SOC_ENUM_SINGLE(TWL6040_REG_HSLCTL, 5, ARRAY_SIZE(twl6040_hs_texts),
			twl6040_hs_texts),
	SOC_ENUM_SINGLE(TWL6040_REG_HSRCTL, 5, ARRAY_SIZE(twl6040_hs_texts),
			twl6040_hs_texts),
};

static const char *twl6040_hf_texts[] = {
	"Off", "HF DAC", "Line-In amp"
};

static const struct soc_enum twl6040_hf_enum[] = {
	SOC_ENUM_SINGLE(TWL6040_REG_HFLCTL, 2, ARRAY_SIZE(twl6040_hf_texts),
			twl6040_hf_texts),
	SOC_ENUM_SINGLE(TWL6040_REG_HFRCTL, 2, ARRAY_SIZE(twl6040_hf_texts),
			twl6040_hf_texts),
};

static const char *twl6040_vibrapath_texts[] = {
	"Input FF", "Audio PDM"
};

static const struct soc_enum twl6040_vibra_enum[] = {
	SOC_ENUM_SINGLE(TWL6040_REG_VIBCTLL, 1,
			ARRAY_SIZE(twl6040_vibrapath_texts),
			twl6040_vibrapath_texts),
	SOC_ENUM_SINGLE(TWL6040_REG_VIBCTLR, 1,
			ARRAY_SIZE(twl6040_vibrapath_texts),
			twl6040_vibrapath_texts),
};

static const struct snd_kcontrol_new amicl_control =
	SOC_DAPM_ENUM("Route", twl6040_enum[0]);

static const struct snd_kcontrol_new amicr_control =
	SOC_DAPM_ENUM("Route", twl6040_enum[1]);

/* Headset DAC playback switches */
static const struct snd_kcontrol_new hsl_mux_controls =
	SOC_DAPM_ENUM("Route", twl6040_hs_enum[0]);

static const struct snd_kcontrol_new hsr_mux_controls =
	SOC_DAPM_ENUM("Route", twl6040_hs_enum[1]);

/* Handsfree DAC playback switches */
static const struct snd_kcontrol_new hfl_mux_controls =
	SOC_DAPM_ENUM("Route", twl6040_hf_enum[0]);

static const struct snd_kcontrol_new hfr_mux_controls =
	SOC_DAPM_ENUM("Route", twl6040_hf_enum[1]);

static const struct snd_kcontrol_new ep_path_enable_control =
	SOC_DAPM_SINGLE("Switch", TWL6040_REG_SW_SHADOW, 0, 1, 0);

static const struct snd_kcontrol_new auxl_switch_control =
	SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFLCTL, 6, 1, 0);

static const struct snd_kcontrol_new auxr_switch_control =
	SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFRCTL, 6, 1, 0);

/* Vibra playback switches */
static const struct snd_kcontrol_new vibral_mux_controls =
	SOC_DAPM_ENUM_EXT("Route", twl6040_vibra_enum[0],
		snd_soc_dapm_get_enum_double,
		twl6040_soc_dapm_put_vibra_enum);

static const struct snd_kcontrol_new vibrar_mux_controls =
	SOC_DAPM_ENUM_EXT("Route", twl6040_vibra_enum[1],
		snd_soc_dapm_get_enum_double,
		twl6040_soc_dapm_put_vibra_enum);

/* Headset power mode */
static const char *twl6040_power_mode_texts[] = {
	"Low-Power", "High-Performance",
};

static const struct soc_enum twl6040_power_mode_enum =
	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(twl6040_power_mode_texts),
			twl6040_power_mode_texts);

static int twl6040_headset_power_get_enum(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);

	ucontrol->value.enumerated.item[0] = priv->hs_power_mode;

	return 0;
}

static int twl6040_headset_power_put_enum(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
	int high_perf = ucontrol->value.enumerated.item[0];
	int ret = 0;

	if (!priv->hs_power_mode_locked)
		ret = headset_power_mode(codec, high_perf);

	if (!ret)
		priv->hs_power_mode = high_perf;

	return ret;
}

static int twl6040_pll_get_enum(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);

	ucontrol->value.enumerated.item[0] = priv->pll_power_mode;

	return 0;
}

static int twl6040_pll_put_enum(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);

	priv->pll_power_mode = ucontrol->value.enumerated.item[0];

	return 0;
}

int twl6040_get_dl1_gain(struct snd_soc_codec *codec)
{
	struct snd_soc_dapm_context *dapm = &codec->dapm;

	if (snd_soc_dapm_get_pin_status(dapm, "EP"))
		return -1; /* -1dB */

	if (snd_soc_dapm_get_pin_status(dapm, "HSOR") ||
		snd_soc_dapm_get_pin_status(dapm, "HSOL")) {

		u8 val = snd_soc_read(codec, TWL6040_REG_HSLCTL);
		if (val & TWL6040_HSDACMODE)
			/* HSDACL in LP mode */
			return -8; /* -8dB */
		else
			/* HSDACL in HP mode */
			return -1; /* -1dB */
	}
	return 0; /* 0dB */
}
EXPORT_SYMBOL_GPL(twl6040_get_dl1_gain);

int twl6040_get_clk_id(struct snd_soc_codec *codec)
{
	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);

	return priv->pll_power_mode;
}
EXPORT_SYMBOL_GPL(twl6040_get_clk_id);

int twl6040_get_trim_value(struct snd_soc_codec *codec, enum twl6040_trim trim)
{
	if (unlikely(trim >= TWL6040_TRIM_INVAL))
		return -EINVAL;

	return twl6040_read_reg_cache(codec, TWL6040_REG_TRIM1 + trim);
}
EXPORT_SYMBOL_GPL(twl6040_get_trim_value);

int twl6040_get_hs_step_size(struct snd_soc_codec *codec)
{
	struct twl6040 *twl6040 = codec->control_data;

	if (twl6040_get_revid(twl6040) < TWL6040_REV_ES1_3)
		/* For ES under ES_1.3 HS step is 2 mV */
		return 2;
	else
		/* For ES_1.3 HS step is 1 mV */
		return 1;
}
EXPORT_SYMBOL_GPL(twl6040_get_hs_step_size);

static const struct snd_kcontrol_new twl6040_snd_controls[] = {
	/* Capture gains */
	SOC_DOUBLE_TLV("Capture Preamplifier Volume",
		TWL6040_REG_MICGAIN, 6, 7, 1, 1, mic_preamp_tlv),
	SOC_DOUBLE_TLV("Capture Volume",
		TWL6040_REG_MICGAIN, 0, 3, 4, 0, mic_amp_tlv),

	/* AFM gains */
	SOC_DOUBLE_TLV("Aux FM Volume",
		TWL6040_REG_LINEGAIN, 0, 3, 7, 0, afm_amp_tlv),

	/* Playback gains */
	SOC_DOUBLE_TLV("Headset Playback Volume",
		TWL6040_REG_HSGAIN, 0, 4, 0xF, 1, hs_tlv),
	SOC_DOUBLE_R_TLV("Handsfree Playback Volume",
		TWL6040_REG_HFLGAIN, TWL6040_REG_HFRGAIN, 0, 0x1D, 1, hf_tlv),
	SOC_SINGLE_TLV("Earphone Playback Volume",
		TWL6040_REG_EARCTL, 1, 0xF, 1, ep_tlv),

	SOC_ENUM_EXT("Headset Power Mode", twl6040_power_mode_enum,
		twl6040_headset_power_get_enum,
		twl6040_headset_power_put_enum),

	SOC_ENUM_EXT("PLL Selection", twl6040_power_mode_enum,
		twl6040_pll_get_enum, twl6040_pll_put_enum),
};

static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
	/* Inputs */
	SND_SOC_DAPM_INPUT("MAINMIC"),
	SND_SOC_DAPM_INPUT("HSMIC"),
	SND_SOC_DAPM_INPUT("SUBMIC"),
	SND_SOC_DAPM_INPUT("AFML"),
	SND_SOC_DAPM_INPUT("AFMR"),

	/* Outputs */
	SND_SOC_DAPM_OUTPUT("HSOL"),
	SND_SOC_DAPM_OUTPUT("HSOR"),
	SND_SOC_DAPM_OUTPUT("HFL"),
	SND_SOC_DAPM_OUTPUT("HFR"),
	SND_SOC_DAPM_OUTPUT("EP"),
	SND_SOC_DAPM_OUTPUT("AUXL"),
	SND_SOC_DAPM_OUTPUT("AUXR"),
	SND_SOC_DAPM_OUTPUT("VIBRAL"),
	SND_SOC_DAPM_OUTPUT("VIBRAR"),

	/* Analog input muxes for the capture amplifiers */
	SND_SOC_DAPM_MUX("Analog Left Capture Route",
			SND_SOC_NOPM, 0, 0, &amicl_control),
	SND_SOC_DAPM_MUX("Analog Right Capture Route",
			SND_SOC_NOPM, 0, 0, &amicr_control),

	/* Analog capture PGAs */
	SND_SOC_DAPM_PGA("MicAmpL",
			TWL6040_REG_MICLCTL, 0, 0, NULL, 0),
	SND_SOC_DAPM_PGA("MicAmpR",
			TWL6040_REG_MICRCTL, 0, 0, NULL, 0),

	/* Auxiliary FM PGAs */
	SND_SOC_DAPM_PGA("AFMAmpL",
			TWL6040_REG_MICLCTL, 1, 0, NULL, 0),
	SND_SOC_DAPM_PGA("AFMAmpR",
			TWL6040_REG_MICRCTL, 1, 0, NULL, 0),

	/* ADCs */
	SND_SOC_DAPM_ADC("ADC Left", NULL, TWL6040_REG_MICLCTL, 2, 0),
	SND_SOC_DAPM_ADC("ADC Right", NULL, TWL6040_REG_MICRCTL, 2, 0),

	/* Microphone bias */
	SND_SOC_DAPM_SUPPLY("Headset Mic Bias",
			    TWL6040_REG_AMICBCTL, 0, 0, NULL, 0),
	SND_SOC_DAPM_SUPPLY("Main Mic Bias",
			    TWL6040_REG_AMICBCTL, 4, 0, NULL, 0),
	SND_SOC_DAPM_SUPPLY("Digital Mic1 Bias",
			    TWL6040_REG_DMICBCTL, 0, 0, NULL, 0),
	SND_SOC_DAPM_SUPPLY("Digital Mic2 Bias",
			    TWL6040_REG_DMICBCTL, 4, 0, NULL, 0),

	/* DACs */
	SND_SOC_DAPM_DAC("HSDAC Left", NULL, SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_DAC("HSDAC Right", NULL, SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_DAC("HFDAC Left", NULL, TWL6040_REG_HFLCTL, 0, 0),
	SND_SOC_DAPM_DAC("HFDAC Right", NULL, TWL6040_REG_HFRCTL, 0, 0),
	/* Virtual DAC for vibra path (DL4 channel) */
	SND_SOC_DAPM_DAC("VIBRA DAC", NULL, SND_SOC_NOPM, 0, 0),

	SND_SOC_DAPM_MUX("Handsfree Left Playback",
			SND_SOC_NOPM, 0, 0, &hfl_mux_controls),
	SND_SOC_DAPM_MUX("Handsfree Right Playback",
			SND_SOC_NOPM, 0, 0, &hfr_mux_controls),
	/* Analog playback Muxes */
	SND_SOC_DAPM_MUX("Headset Left Playback",
			SND_SOC_NOPM, 0, 0, &hsl_mux_controls),
	SND_SOC_DAPM_MUX("Headset Right Playback",
			SND_SOC_NOPM, 0, 0, &hsr_mux_controls),

	SND_SOC_DAPM_MUX("Vibra Left Playback", SND_SOC_NOPM, 0, 0,
			&vibral_mux_controls),
	SND_SOC_DAPM_MUX("Vibra Right Playback", SND_SOC_NOPM, 0, 0,
			&vibrar_mux_controls),

	SND_SOC_DAPM_SWITCH("Earphone Playback", SND_SOC_NOPM, 0, 0,
			&ep_path_enable_control),
	SND_SOC_DAPM_SWITCH("AUXL Playback", SND_SOC_NOPM, 0, 0,
			&auxl_switch_control),
	SND_SOC_DAPM_SWITCH("AUXR Playback", SND_SOC_NOPM, 0, 0,
			&auxr_switch_control),

	/* Analog playback drivers */
	SND_SOC_DAPM_OUT_DRV("HF Left Driver",
			TWL6040_REG_HFLCTL, 4, 0, NULL, 0),
	SND_SOC_DAPM_OUT_DRV("HF Right Driver",
			TWL6040_REG_HFRCTL, 4, 0, NULL, 0),
	SND_SOC_DAPM_OUT_DRV("HS Left Driver",
			TWL6040_REG_HSLCTL, 2, 0, NULL, 0),
	SND_SOC_DAPM_OUT_DRV("HS Right Driver",
			TWL6040_REG_HSRCTL, 2, 0, NULL, 0),
	SND_SOC_DAPM_OUT_DRV_E("Earphone Driver",
			TWL6040_REG_EARCTL, 0, 0, NULL, 0,
			twl6040_ep_drv_event,
			SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
	SND_SOC_DAPM_OUT_DRV("Vibra Left Driver",
			TWL6040_REG_VIBCTLL, 0, 0, NULL, 0),
	SND_SOC_DAPM_OUT_DRV("Vibra Right Driver",
			TWL6040_REG_VIBCTLR, 0, 0, NULL, 0),

	SND_SOC_DAPM_SUPPLY("Vibra Left Control", TWL6040_REG_VIBCTLL, 2, 0,
			    NULL, 0),
	SND_SOC_DAPM_SUPPLY("Vibra Right Control", TWL6040_REG_VIBCTLR, 2, 0,
			    NULL, 0),
	SND_SOC_DAPM_SUPPLY_S("HSDAC Power", 1, SND_SOC_NOPM, 0, 0,
			      twl6040_hs_dac_event,
			      SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),

	/* Analog playback PGAs */
	SND_SOC_DAPM_PGA("HF Left PGA",
			TWL6040_REG_HFLCTL, 1, 0, NULL, 0),
	SND_SOC_DAPM_PGA("HF Right PGA",
			TWL6040_REG_HFRCTL, 1, 0, NULL, 0),

};

static const struct snd_soc_dapm_route intercon[] = {
	/* Stream -> DAC mapping */
	{"HSDAC Left", NULL, "Legacy Playback"},
	{"HSDAC Left", NULL, "Headset Playback"},
	{"HSDAC Right", NULL, "Legacy Playback"},
	{"HSDAC Right", NULL, "Headset Playback"},

	{"HFDAC Left", NULL, "Legacy Playback"},
	{"HFDAC Left", NULL, "Handsfree Playback"},
	{"HFDAC Right", NULL, "Legacy Playback"},
	{"HFDAC Right", NULL, "Handsfree Playback"},

	{"VIBRA DAC", NULL, "Legacy Playback"},
	{"VIBRA DAC", NULL, "Vibra Playback"},

	/* ADC -> Stream mapping */
	{"Legacy Capture" , NULL, "ADC Left"},
	{"Capture", NULL, "ADC Left"},
	{"Legacy Capture", NULL, "ADC Right"},
	{"Capture" , NULL, "ADC Right"},

	/* Capture path */
	{"Analog Left Capture Route", "Headset Mic", "HSMIC"},
	{"Analog Left Capture Route", "Main Mic", "MAINMIC"},
	{"Analog Left Capture Route", "Aux/FM Left", "AFML"},

	{"Analog Right Capture Route", "Headset Mic", "HSMIC"},
	{"Analog Right Capture Route", "Sub Mic", "SUBMIC"},
	{"Analog Right Capture Route", "Aux/FM Right", "AFMR"},

	{"MicAmpL", NULL, "Analog Left Capture Route"},
	{"MicAmpR", NULL, "Analog Right Capture Route"},

	{"ADC Left", NULL, "MicAmpL"},
	{"ADC Right", NULL, "MicAmpR"},

	/* AFM path */
	{"AFMAmpL", NULL, "AFML"},
	{"AFMAmpR", NULL, "AFMR"},

	{"HSDAC Left", NULL, "HSDAC Power"},
	{"HSDAC Right", NULL, "HSDAC Power"},

	{"Headset Left Playback", "HS DAC", "HSDAC Left"},
	{"Headset Left Playback", "Line-In amp", "AFMAmpL"},

	{"Headset Right Playback", "HS DAC", "HSDAC Right"},
	{"Headset Right Playback", "Line-In amp", "AFMAmpR"},

	{"HS Left Driver", NULL, "Headset Left Playback"},
	{"HS Right Driver", NULL, "Headset Right Playback"},

	{"HSOL", NULL, "HS Left Driver"},
	{"HSOR", NULL, "HS Right Driver"},

	/* Earphone playback path */
	{"Earphone Playback", "Switch", "HSDAC Left"},
	{"Earphone Driver", NULL, "Earphone Playback"},
	{"EP", NULL, "Earphone Driver"},

	{"Handsfree Left Playback", "HF DAC", "HFDAC Left"},
	{"Handsfree Left Playback", "Line-In amp", "AFMAmpL"},

	{"Handsfree Right Playback", "HF DAC", "HFDAC Right"},
	{"Handsfree Right Playback", "Line-In amp", "AFMAmpR"},

	{"HF Left PGA", NULL, "Handsfree Left Playback"},
	{"HF Right PGA", NULL, "Handsfree Right Playback"},

	{"HF Left Driver", NULL, "HF Left PGA"},
	{"HF Right Driver", NULL, "HF Right PGA"},

	{"HFL", NULL, "HF Left Driver"},
	{"HFR", NULL, "HF Right Driver"},

	{"AUXL Playback", "Switch", "HF Left PGA"},
	{"AUXR Playback", "Switch", "HF Right PGA"},

	{"AUXL", NULL, "AUXL Playback"},
	{"AUXR", NULL, "AUXR Playback"},

	/* Vibrator paths */
	{"Vibra Left Playback", "Audio PDM", "VIBRA DAC"},
	{"Vibra Right Playback", "Audio PDM", "VIBRA DAC"},

	{"Vibra Left Driver", NULL, "Vibra Left Playback"},
	{"Vibra Right Driver", NULL, "Vibra Right Playback"},
	{"Vibra Left Driver", NULL, "Vibra Left Control"},
	{"Vibra Right Driver", NULL, "Vibra Right Control"},

	{"VIBRAL", NULL, "Vibra Left Driver"},
	{"VIBRAR", NULL, "Vibra Right Driver"},
};

static int twl6040_set_bias_level(struct snd_soc_codec *codec,
				enum snd_soc_bias_level level)
{
	struct twl6040 *twl6040 = codec->control_data;
	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
	int ret;

	switch (level) {
	case SND_SOC_BIAS_ON:
		break;
	case SND_SOC_BIAS_PREPARE:
		break;
	case SND_SOC_BIAS_STANDBY:
		if (priv->codec_powered)
			break;

		ret = twl6040_power(twl6040, 1);
		if (ret)
			return ret;

		priv->codec_powered = 1;

		twl6040_restore_regs(codec);

		/* Set external boost GPO */
		twl6040_write(codec, TWL6040_REG_GPOCTL, 0x02);
		break;
	case SND_SOC_BIAS_OFF:
		if (!priv->codec_powered)
			break;

		twl6040_power(twl6040, 0);
		priv->codec_powered = 0;
		break;
	}

	codec->dapm.bias_level = level;

	return 0;
}

static int twl6040_startup(struct snd_pcm_substream *substream,
			struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);

	snd_pcm_hw_constraint_list(substream->runtime, 0,
				SNDRV_PCM_HW_PARAM_RATE,
				&sysclk_constraints[priv->pll_power_mode]);

	return 0;
}

static int twl6040_hw_params(struct snd_pcm_substream *substream,
			struct snd_pcm_hw_params *params,
			struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
	int rate;

	rate = params_rate(params);
	switch (rate) {
	case 11250:
	case 22500:
	case 44100:
	case 88200:
		/* These rates are not supported when HPPLL is in use */
		if (unlikely(priv->pll == TWL6040_SYSCLK_SEL_HPPLL)) {
			dev_err(codec->dev, "HPPLL does not support rate %d\n",
				rate);
			return -EINVAL;
		}
		priv->sysclk = 17640000;
		break;
	case 8000:
	case 16000:
	case 32000:
	case 48000:
	case 96000:
		priv->sysclk = 19200000;
		break;
	default:
		dev_err(codec->dev, "unsupported rate %d\n", rate);
		return -EINVAL;
	}

	return 0;
}

static int twl6040_prepare(struct snd_pcm_substream *substream,
			struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	struct twl6040 *twl6040 = codec->control_data;
	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
	int ret;

	if (!priv->sysclk) {
		dev_err(codec->dev,
			"no mclk configured, call set_sysclk() on init\n");
		return -EINVAL;
	}

	ret = twl6040_set_pll(twl6040, priv->pll, priv->clk_in, priv->sysclk);
	if (ret) {
		dev_err(codec->dev, "Can not set PLL (%d)\n", ret);
		return -EPERM;
	}

	return 0;
}

static int twl6040_set_dai_sysclk(struct snd_soc_dai *codec_dai,
		int clk_id, unsigned int freq, int dir)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);

	switch (clk_id) {
	case TWL6040_SYSCLK_SEL_LPPLL:
	case TWL6040_SYSCLK_SEL_HPPLL:
		priv->pll = clk_id;
		priv->clk_in = freq;
		break;
	default:
		dev_err(codec->dev, "unknown clk_id %d\n", clk_id);
		return -EINVAL;
	}

	return 0;
}

static const struct snd_soc_dai_ops twl6040_dai_ops = {
	.startup	= twl6040_startup,
	.hw_params	= twl6040_hw_params,
	.prepare	= twl6040_prepare,
	.set_sysclk	= twl6040_set_dai_sysclk,
};

static struct snd_soc_dai_driver twl6040_dai[] = {
{
	.name = "twl6040-legacy",
	.playback = {
		.stream_name = "Legacy Playback",
		.channels_min = 1,
		.channels_max = 5,
		.rates = TWL6040_RATES,
		.formats = TWL6040_FORMATS,
	},
	.capture = {
		.stream_name = "Legacy Capture",
		.channels_min = 1,
		.channels_max = 2,
		.rates = TWL6040_RATES,
		.formats = TWL6040_FORMATS,
	},
	.ops = &twl6040_dai_ops,
},
{
	.name = "twl6040-ul",
	.capture = {
		.stream_name = "Capture",
		.channels_min = 1,
		.channels_max = 2,
		.rates = TWL6040_RATES,
		.formats = TWL6040_FORMATS,
	},
	.ops = &twl6040_dai_ops,
},
{
	.name = "twl6040-dl1",
	.playback = {
		.stream_name = "Headset Playback",
		.channels_min = 1,
		.channels_max = 2,
		.rates = TWL6040_RATES,
		.formats = TWL6040_FORMATS,
	},
	.ops = &twl6040_dai_ops,
},
{
	.name = "twl6040-dl2",
	.playback = {
		.stream_name = "Handsfree Playback",
		.channels_min = 1,
		.channels_max = 2,
		.rates = TWL6040_RATES,
		.formats = TWL6040_FORMATS,
	},
	.ops = &twl6040_dai_ops,
},
{
	.name = "twl6040-vib",
	.playback = {
		.stream_name = "Vibra Playback",
		.channels_min = 1,
		.channels_max = 1,
		.rates = SNDRV_PCM_RATE_CONTINUOUS,
		.formats = TWL6040_FORMATS,
	},
	.ops = &twl6040_dai_ops,
},
};

#ifdef CONFIG_PM
static int twl6040_suspend(struct snd_soc_codec *codec)
{
	twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);

	return 0;
}

static int twl6040_resume(struct snd_soc_codec *codec)
{
	twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

	return 0;
}
#else
#define twl6040_suspend NULL
#define twl6040_resume NULL
#endif

static int twl6040_probe(struct snd_soc_codec *codec)
{
	struct twl6040_data *priv;
	struct platform_device *pdev = container_of(codec->dev,
						   struct platform_device, dev);
	int ret = 0;

	priv = devm_kzalloc(codec->dev, sizeof(*priv), GFP_KERNEL);
	if (priv == NULL)
		return -ENOMEM;

	snd_soc_codec_set_drvdata(codec, priv);

	priv->codec = codec;
	codec->control_data = dev_get_drvdata(codec->dev->parent);

	priv->plug_irq = platform_get_irq(pdev, 0);
	if (priv->plug_irq < 0) {
		dev_err(codec->dev, "invalid irq\n");
		return -EINVAL;
	}

	INIT_DELAYED_WORK(&priv->hs_jack.work, twl6040_accessory_work);

	mutex_init(&priv->mutex);

	ret = devm_request_threaded_irq(codec->dev, priv->plug_irq, NULL,
					twl6040_audio_handler, IRQF_NO_SUSPEND,
					"twl6040_irq_plug", codec);
	if (ret) {
		dev_err(codec->dev, "PLUG IRQ request failed: %d\n", ret);
		return ret;
	}

	twl6040_init_chip(codec);

	/* power on device */
	return twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
}

static int twl6040_remove(struct snd_soc_codec *codec)
{
	twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);

	return 0;
}

static struct snd_soc_codec_driver soc_codec_dev_twl6040 = {
	.probe = twl6040_probe,
	.remove = twl6040_remove,
	.suspend = twl6040_suspend,
	.resume = twl6040_resume,
	.read = twl6040_read_reg_cache,
	.write = twl6040_write,
	.set_bias_level = twl6040_set_bias_level,
	.reg_cache_size = ARRAY_SIZE(twl6040_reg),
	.reg_word_size = sizeof(u8),
	.reg_cache_default = twl6040_reg,
	.ignore_pmdown_time = true,

	.controls = twl6040_snd_controls,
	.num_controls = ARRAY_SIZE(twl6040_snd_controls),
	.dapm_widgets = twl6040_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(twl6040_dapm_widgets),
	.dapm_routes = intercon,
	.num_dapm_routes = ARRAY_SIZE(intercon),
};

static int twl6040_codec_probe(struct platform_device *pdev)
{
	return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_twl6040,
				      twl6040_dai, ARRAY_SIZE(twl6040_dai));
}

static int twl6040_codec_remove(struct platform_device *pdev)
{
	snd_soc_unregister_codec(&pdev->dev);
	return 0;
}

static struct platform_driver twl6040_codec_driver = {
	.driver = {
		.name = "twl6040-codec",
		.owner = THIS_MODULE,
	},
	.probe = twl6040_codec_probe,
	.remove = twl6040_codec_remove,
};

module_platform_driver(twl6040_codec_driver);

MODULE_DESCRIPTION("ASoC TWL6040 codec driver");
MODULE_AUTHOR("Misael Lopez Cruz");
MODULE_LICENSE("GPL");