summaryrefslogtreecommitdiffstats
path: root/sound/ppc/tumbler.c
blob: 36c5d5d45bb1302bf0765f73ff2c41a8358a6005 (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
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
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
/*
 * PMac Tumbler/Snapper lowlevel functions
 *
 * Copyright (c) by Takashi Iwai <tiwai@suse.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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 *   Rene Rebe <rene.rebe@gmx.net>:
 *     * update from shadow registers on wakeup and headphone plug
 *     * automatically toggle DRC on headphone plug
 *	
 */


#include <sound/driver.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/i2c-dev.h>
#include <linux/kmod.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <sound/core.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/machdep.h>
#include <asm/pmac_feature.h>
#include "pmac.h"
#include "tumbler_volume.h"

#undef DEBUG

#ifdef DEBUG
#define DBG(fmt...) printk(fmt)
#else
#define DBG(fmt...)
#endif

/* i2c address for tumbler */
#define TAS_I2C_ADDR	0x34

/* registers */
#define TAS_REG_MCS	0x01	/* main control */
#define TAS_REG_DRC	0x02
#define TAS_REG_VOL	0x04
#define TAS_REG_TREBLE	0x05
#define TAS_REG_BASS	0x06
#define TAS_REG_INPUT1	0x07
#define TAS_REG_INPUT2	0x08

/* tas3001c */
#define TAS_REG_PCM	TAS_REG_INPUT1
 
/* tas3004 */
#define TAS_REG_LMIX	TAS_REG_INPUT1
#define TAS_REG_RMIX	TAS_REG_INPUT2
#define TAS_REG_MCS2	0x43		/* main control 2 */
#define TAS_REG_ACS	0x40		/* analog control */

/* mono volumes for tas3001c/tas3004 */
enum {
	VOL_IDX_PCM_MONO, /* tas3001c only */
	VOL_IDX_BASS, VOL_IDX_TREBLE,
	VOL_IDX_LAST_MONO
};

/* stereo volumes for tas3004 */
enum {
	VOL_IDX_PCM, VOL_IDX_PCM2, VOL_IDX_ADC,
	VOL_IDX_LAST_MIX
};

typedef struct pmac_gpio {
	unsigned int addr;
	u8 active_val;
	u8 inactive_val;
	u8 active_state;
} pmac_gpio_t;

typedef struct pmac_tumbler_t {
	pmac_keywest_t i2c;
	pmac_gpio_t audio_reset;
	pmac_gpio_t amp_mute;
	pmac_gpio_t line_mute;
	pmac_gpio_t line_detect;
	pmac_gpio_t hp_mute;
	pmac_gpio_t hp_detect;
	int headphone_irq;
	int lineout_irq;
	unsigned int save_master_vol[2];
	unsigned int master_vol[2];
	unsigned int save_master_switch[2];
	unsigned int master_switch[2];
	unsigned int mono_vol[VOL_IDX_LAST_MONO];
	unsigned int mix_vol[VOL_IDX_LAST_MIX][2]; /* stereo volumes for tas3004 */
	int drc_range;
	int drc_enable;
	int capture_source;
	int anded_reset;
	int auto_mute_notify;
	int reset_on_sleep;
	u8  acs;
} pmac_tumbler_t;


/*
 */

static int send_init_client(pmac_keywest_t *i2c, unsigned int *regs)
{
	while (*regs > 0) {
		int err, count = 10;
		do {
			err = i2c_smbus_write_byte_data(i2c->client,
							regs[0], regs[1]);
			if (err >= 0)
				break;
			DBG("(W) i2c error %d\n", err);
			mdelay(10);
		} while (count--);
		if (err < 0)
			return -ENXIO;
		regs += 2;
	}
	return 0;
}


static int tumbler_init_client(pmac_keywest_t *i2c)
{
	static unsigned int regs[] = {
		/* normal operation, SCLK=64fps, i2s output, i2s input, 16bit width */
		TAS_REG_MCS, (1<<6)|(2<<4)|(2<<2)|0,
		0, /* terminator */
	};
	DBG("(I) tumbler init client\n");
	return send_init_client(i2c, regs);
}

static int snapper_init_client(pmac_keywest_t *i2c)
{
	static unsigned int regs[] = {
		/* normal operation, SCLK=64fps, i2s output, 16bit width */
		TAS_REG_MCS, (1<<6)|(2<<4)|0,
		/* normal operation, all-pass mode */
		TAS_REG_MCS2, (1<<1),
		/* normal output, no deemphasis, A input, power-up, line-in */
		TAS_REG_ACS, 0,
		0, /* terminator */
	};
	DBG("(I) snapper init client\n");
	return send_init_client(i2c, regs);
}
	
/*
 * gpio access
 */
#define do_gpio_write(gp, val) \
	pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, (gp)->addr, val)
#define do_gpio_read(gp) \
	pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, (gp)->addr, 0)
#define tumbler_gpio_free(gp) /* NOP */

static void write_audio_gpio(pmac_gpio_t *gp, int active)
{
	if (! gp->addr)
		return;
	active = active ? gp->active_val : gp->inactive_val;
	do_gpio_write(gp, active);
	DBG("(I) gpio %x write %d\n", gp->addr, active);
}

static int check_audio_gpio(pmac_gpio_t *gp)
{
	int ret;

	if (! gp->addr)
		return 0;

	ret = do_gpio_read(gp);

	return (ret & 0xd) == (gp->active_val & 0xd);
}

static int read_audio_gpio(pmac_gpio_t *gp)
{
	int ret;
	if (! gp->addr)
		return 0;
	ret = ((do_gpio_read(gp) & 0x02) !=0);
	return ret == gp->active_state;
}

/*
 * update master volume
 */
static int tumbler_set_master_volume(pmac_tumbler_t *mix)
{
	unsigned char block[6];
	unsigned int left_vol, right_vol;
  
	if (! mix->i2c.client)
		return -ENODEV;
  
	if (! mix->master_switch[0])
		left_vol = 0;
	else {
		left_vol = mix->master_vol[0];
		if (left_vol >= ARRAY_SIZE(master_volume_table))
			left_vol = ARRAY_SIZE(master_volume_table) - 1;
		left_vol = master_volume_table[left_vol];
	}
	if (! mix->master_switch[1])
		right_vol = 0;
	else {
		right_vol = mix->master_vol[1];
		if (right_vol >= ARRAY_SIZE(master_volume_table))
			right_vol = ARRAY_SIZE(master_volume_table) - 1;
		right_vol = master_volume_table[right_vol];
	}

	block[0] = (left_vol >> 16) & 0xff;
	block[1] = (left_vol >> 8)  & 0xff;
	block[2] = (left_vol >> 0)  & 0xff;

	block[3] = (right_vol >> 16) & 0xff;
	block[4] = (right_vol >> 8)  & 0xff;
	block[5] = (right_vol >> 0)  & 0xff;
  
	if (i2c_smbus_write_block_data(mix->i2c.client, TAS_REG_VOL,
				       6, block) < 0) {
		snd_printk("failed to set volume \n");
		return -EINVAL;
	}
	return 0;
}


/* output volume */
static int tumbler_info_master_volume(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = ARRAY_SIZE(master_volume_table) - 1;
	return 0;
}

static int tumbler_get_master_volume(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	pmac_t *chip = snd_kcontrol_chip(kcontrol);
	pmac_tumbler_t *mix = chip->mixer_data;
	snd_assert(mix, return -ENODEV);
	ucontrol->value.integer.value[0] = mix->master_vol[0];
	ucontrol->value.integer.value[1] = mix->master_vol[1];
	return 0;
}

static int tumbler_put_master_volume(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	pmac_t *chip = snd_kcontrol_chip(kcontrol);
	pmac_tumbler_t *mix = chip->mixer_data;
	int change;

	snd_assert(mix, return -ENODEV);
	change = mix->master_vol[0] != ucontrol->value.integer.value[0] ||
		mix->master_vol[1] != ucontrol->value.integer.value[1];
	if (change) {
		mix->master_vol[0] = ucontrol->value.integer.value[0];
		mix->master_vol[1] = ucontrol->value.integer.value[1];
		tumbler_set_master_volume(mix);
	}
	return change;
}

/* output switch */
static int tumbler_get_master_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	pmac_t *chip = snd_kcontrol_chip(kcontrol);
	pmac_tumbler_t *mix = chip->mixer_data;
	snd_assert(mix, return -ENODEV);
	ucontrol->value.integer.value[0] = mix->master_switch[0];
	ucontrol->value.integer.value[1] = mix->master_switch[1];
	return 0;
}

static int tumbler_put_master_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	pmac_t *chip = snd_kcontrol_chip(kcontrol);
	pmac_tumbler_t *mix = chip->mixer_data;
	int change;

	snd_assert(mix, return -ENODEV);
	change = mix->master_switch[0] != ucontrol->value.integer.value[0] ||
		mix->master_switch[1] != ucontrol->value.integer.value[1];
	if (change) {
		mix->master_switch[0] = !!ucontrol->value.integer.value[0];
		mix->master_switch[1] = !!ucontrol->value.integer.value[1];
		tumbler_set_master_volume(mix);
	}
	return change;
}


/*
 * TAS3001c dynamic range compression
 */

#define TAS3001_DRC_MAX		0x5f

static int tumbler_set_drc(pmac_tumbler_t *mix)
{
	unsigned char val[2];

	if (! mix->i2c.client)
		return -ENODEV;
  
	if (mix->drc_enable) {
		val[0] = 0xc1; /* enable, 3:1 compression */
		if (mix->drc_range > TAS3001_DRC_MAX)
			val[1] = 0xf0;
		else if (mix->drc_range < 0)
			val[1] = 0x91;
		else
			val[1] = mix->drc_range + 0x91;
	} else {
		val[0] = 0;
		val[1] = 0;
	}

	if (i2c_smbus_write_block_data(mix->i2c.client, TAS_REG_DRC,
				       2, val) < 0) {
		snd_printk("failed to set DRC\n");
		return -EINVAL;
	}
	return 0;
}

/*
 * TAS3004
 */

#define TAS3004_DRC_MAX		0xef

static int snapper_set_drc(pmac_tumbler_t *mix)
{
	unsigned char val[6];

	if (! mix->i2c.client)
		return -ENODEV;
  
	if (mix->drc_enable)
		val[0] = 0x50; /* 3:1 above threshold */
	else
		val[0] = 0x51; /* disabled */
	val[1] = 0x02; /* 1:1 below threshold */
	if (mix->drc_range > 0xef)
		val[2] = 0xef;
	else if (mix->drc_range < 0)
		val[2] = 0x00;
	else
		val[2] = mix->drc_range;
	val[3] = 0xb0;
	val[4] = 0x60;
	val[5] = 0xa0;

	if (i2c_smbus_write_block_data(mix->i2c.client, TAS_REG_DRC,
				       6, val) < 0) {
		snd_printk("failed to set DRC\n");
		return -EINVAL;
	}
	return 0;
}

static int tumbler_info_drc_value(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
{
	pmac_t *chip = snd_kcontrol_chip(kcontrol);
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max =
		chip->model == PMAC_TUMBLER ? TAS3001_DRC_MAX : TAS3004_DRC_MAX;
	return 0;
}

static int tumbler_get_drc_value(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	pmac_t *chip = snd_kcontrol_chip(kcontrol);
	pmac_tumbler_t *mix;
	if (! (mix = chip->mixer_data))
		return -ENODEV;
	ucontrol->value.integer.value[0] = mix->drc_range;
	return 0;
}

static int tumbler_put_drc_value(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	pmac_t *chip = snd_kcontrol_chip(kcontrol);
	pmac_tumbler_t *mix;
	int change;

	if (! (mix = chip->mixer_data))
		return -ENODEV;
	change = mix->drc_range != ucontrol->value.integer.value[0];
	if (change) {
		mix->drc_range = ucontrol->value.integer.value[0];
		if (chip->model == PMAC_TUMBLER)
			tumbler_set_drc(mix);
		else
			snapper_set_drc(mix);
	}
	return change;
}

static int tumbler_get_drc_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	pmac_t *chip = snd_kcontrol_chip(kcontrol);
	pmac_tumbler_t *mix;
	if (! (mix = chip->mixer_data))
		return -ENODEV;
	ucontrol->value.integer.value[0] = mix->drc_enable;
	return 0;
}

static int tumbler_put_drc_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	pmac_t *chip = snd_kcontrol_chip(kcontrol);
	pmac_tumbler_t *mix;
	int change;

	if (! (mix = chip->mixer_data))
		return -ENODEV;
	change = mix->drc_enable != ucontrol->value.integer.value[0];
	if (change) {
		mix->drc_enable = !!ucontrol->value.integer.value[0];
		if (chip->model == PMAC_TUMBLER)
			tumbler_set_drc(mix);
		else
			snapper_set_drc(mix);
	}
	return change;
}


/*
 * mono volumes
 */

struct tumbler_mono_vol {
	int index;
	int reg;
	int bytes;
	unsigned int max;
	unsigned int *table;
};

static int tumbler_set_mono_volume(pmac_tumbler_t *mix, struct tumbler_mono_vol *info)
{
	unsigned char block[4];
	unsigned int vol;
	int i;
  
	if (! mix->i2c.client)
		return -ENODEV;
  
	vol = mix->mono_vol[info->index];
	if (vol >= info->max)
		vol = info->max - 1;
	vol = info->table[vol];
	for (i = 0; i < info->bytes; i++)
		block[i] = (vol >> ((info->bytes - i - 1) * 8)) & 0xff;
	if (i2c_smbus_write_block_data(mix->i2c.client, info->reg,
				       info->bytes, block) < 0) {
		snd_printk("failed to set mono volume %d\n", info->index);
		return -EINVAL;
	}
	return 0;
}

static int tumbler_info_mono(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
{
	struct tumbler_mono_vol *info = (struct tumbler_mono_vol *)kcontrol->private_value;

	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = info->max - 1;
	return 0;
}

static int tumbler_get_mono(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	struct tumbler_mono_vol *info = (struct tumbler_mono_vol *)kcontrol->private_value;
	pmac_t *chip = snd_kcontrol_chip(kcontrol);
	pmac_tumbler_t *mix;
	if (! (mix = chip->mixer_data))
		return -ENODEV;
	ucontrol->value.integer.value[0] = mix->mono_vol[info->index];
	return 0;
}

static int tumbler_put_mono(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	struct tumbler_mono_vol *info = (struct tumbler_mono_vol *)kcontrol->private_value;
	pmac_t *chip = snd_kcontrol_chip(kcontrol);
	pmac_tumbler_t *mix;
	int change;

	if (! (mix = chip->mixer_data))
		return -ENODEV;
	change = mix->mono_vol[info->index] != ucontrol->value.integer.value[0];
	if (change) {
		mix->mono_vol[info->index] = ucontrol->value.integer.value[0];
		tumbler_set_mono_volume(mix, info);
	}
	return change;
}

/* TAS3001c mono volumes */
static struct tumbler_mono_vol tumbler_pcm_vol_info = {
	.index = VOL_IDX_PCM_MONO,
	.reg = TAS_REG_PCM,
	.bytes = 3,
	.max = ARRAY_SIZE(mixer_volume_table),
	.table = mixer_volume_table,
};

static struct tumbler_mono_vol tumbler_bass_vol_info = {
	.index = VOL_IDX_BASS,
	.reg = TAS_REG_BASS,
	.bytes = 1,
	.max = ARRAY_SIZE(bass_volume_table),
	.table = bass_volume_table,
};

static struct tumbler_mono_vol tumbler_treble_vol_info = {
	.index = VOL_IDX_TREBLE,
	.reg = TAS_REG_TREBLE,
	.bytes = 1,
	.max = ARRAY_SIZE(treble_volume_table),
	.table = treble_volume_table,
};

/* TAS3004 mono volumes */
static struct tumbler_mono_vol snapper_bass_vol_info = {
	.index = VOL_IDX_BASS,
	.reg = TAS_REG_BASS,
	.bytes = 1,
	.max = ARRAY_SIZE(snapper_bass_volume_table),
	.table = snapper_bass_volume_table,
};

static struct tumbler_mono_vol snapper_treble_vol_info = {
	.index = VOL_IDX_TREBLE,
	.reg = TAS_REG_TREBLE,
	.bytes = 1,
	.max = ARRAY_SIZE(snapper_treble_volume_table),
	.table = snapper_treble_volume_table,
};


#define DEFINE_MONO(xname,type) { \
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,\
	.name = xname, \
	.info = tumbler_info_mono, \
	.get = tumbler_get_mono, \
	.put = tumbler_put_mono, \
	.private_value = (unsigned long)(&tumbler_##type##_vol_info), \
}

#define DEFINE_SNAPPER_MONO(xname,type) { \
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,\
	.name = xname, \
	.info = tumbler_info_mono, \
	.get = tumbler_get_mono, \
	.put = tumbler_put_mono, \
	.private_value = (unsigned long)(&snapper_##type##_vol_info), \
}


/*
 * snapper mixer volumes
 */

static int snapper_set_mix_vol1(pmac_tumbler_t *mix, int idx, int ch, int reg)
{
	int i, j, vol;
	unsigned char block[9];

	vol = mix->mix_vol[idx][ch];
	if (vol >= ARRAY_SIZE(mixer_volume_table)) {
		vol = ARRAY_SIZE(mixer_volume_table) - 1;
		mix->mix_vol[idx][ch] = vol;
	}

	for (i = 0; i < 3; i++) {
		vol = mix->mix_vol[i][ch];
		vol = mixer_volume_table[vol];
		for (j = 0; j < 3; j++)
			block[i * 3 + j] = (vol >> ((2 - j) * 8)) & 0xff;
	}
	if (i2c_smbus_write_block_data(mix->i2c.client, reg, 9, block) < 0) {
		snd_printk("failed to set mono volume %d\n", reg);
		return -EINVAL;
	}
	return 0;
}

static int snapper_set_mix_vol(pmac_tumbler_t *mix, int idx)
{
	if (! mix->i2c.client)
		return -ENODEV;
	if (snapper_set_mix_vol1(mix, idx, 0, TAS_REG_LMIX) < 0 ||
	    snapper_set_mix_vol1(mix, idx, 1, TAS_REG_RMIX) < 0)
		return -EINVAL;
	return 0;
}

static int snapper_info_mix(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = ARRAY_SIZE(mixer_volume_table) - 1;
	return 0;
}

static int snapper_get_mix(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	int idx = (int)kcontrol->private_value;
	pmac_t *chip = snd_kcontrol_chip(kcontrol);
	pmac_tumbler_t *mix;
	if (! (mix = chip->mixer_data))
		return -ENODEV;
	ucontrol->value.integer.value[0] = mix->mix_vol[idx][0];
	ucontrol->value.integer.value[1] = mix->mix_vol[idx][1];
	return 0;
}

static int snapper_put_mix(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	int idx = (int)kcontrol->private_value;
	pmac_t *chip = snd_kcontrol_chip(kcontrol);
	pmac_tumbler_t *mix;
	int change;

	if (! (mix = chip->mixer_data))
		return -ENODEV;
	change = mix->mix_vol[idx][0] != ucontrol->value.integer.value[0] ||
		mix->mix_vol[idx][1] != ucontrol->value.integer.value[1];
	if (change) {
		mix->mix_vol[idx][0] = ucontrol->value.integer.value[0];
		mix->mix_vol[idx][1] = ucontrol->value.integer.value[1];
		snapper_set_mix_vol(mix, idx);
	}
	return change;
}


/*
 * mute switches. FIXME: Turn that into software mute when both outputs are muted
 * to avoid codec reset on ibook M7
 */

enum { TUMBLER_MUTE_HP, TUMBLER_MUTE_AMP, TUMBLER_MUTE_LINE };

static int tumbler_get_mute_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	pmac_t *chip = snd_kcontrol_chip(kcontrol);
	pmac_tumbler_t *mix;
	pmac_gpio_t *gp;
	if (! (mix = chip->mixer_data))
		return -ENODEV;
	switch(kcontrol->private_value) {
	case TUMBLER_MUTE_HP:
		gp = &mix->hp_mute;	break;
	case TUMBLER_MUTE_AMP:
		gp = &mix->amp_mute;	break;
	case TUMBLER_MUTE_LINE:
		gp = &mix->line_mute;	break;
	default:
		gp = NULL;
	}
	if (gp == NULL)
		return -EINVAL;
	ucontrol->value.integer.value[0] = !check_audio_gpio(gp);
	return 0;
}

static int tumbler_put_mute_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	pmac_t *chip = snd_kcontrol_chip(kcontrol);
	pmac_tumbler_t *mix;
	pmac_gpio_t *gp;
	int val;
#ifdef PMAC_SUPPORT_AUTOMUTE
	if (chip->update_automute && chip->auto_mute)
		return 0; /* don't touch in the auto-mute mode */
#endif	
	if (! (mix = chip->mixer_data))
		return -ENODEV;
	switch(kcontrol->private_value) {
	case TUMBLER_MUTE_HP:
		gp = &mix->hp_mute;	break;
	case TUMBLER_MUTE_AMP:
		gp = &mix->amp_mute;	break;
	case TUMBLER_MUTE_LINE:
		gp = &mix->line_mute;	break;
	default:
		gp = NULL;
	}
	if (gp == NULL)
		return -EINVAL;
	val = ! check_audio_gpio(gp);
	if (val != ucontrol->value.integer.value[0]) {
		write_audio_gpio(gp, ! ucontrol->value.integer.value[0]);
		return 1;
	}
	return 0;
}

static int snapper_set_capture_source(pmac_tumbler_t *mix)
{
	if (! mix->i2c.client)
		return -ENODEV;
	if (mix->capture_source)
		mix->acs = mix->acs |= 2;
	else
		mix->acs &= ~2;
	return i2c_smbus_write_byte_data(mix->i2c.client, TAS_REG_ACS, mix->acs);
}

static int snapper_info_capture_source(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
{
	static char *texts[2] = {
		"Line", "Mic"
	};
	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 2;
	if (uinfo->value.enumerated.item > 1)
		uinfo->value.enumerated.item = 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snapper_get_capture_source(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	pmac_t *chip = snd_kcontrol_chip(kcontrol);
	pmac_tumbler_t *mix = chip->mixer_data;

	snd_assert(mix, return -ENODEV);
	ucontrol->value.integer.value[0] = mix->capture_source;
	return 0;
}

static int snapper_put_capture_source(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	pmac_t *chip = snd_kcontrol_chip(kcontrol);
	pmac_tumbler_t *mix = chip->mixer_data;
	int change;

	snd_assert(mix, return -ENODEV);
	change = ucontrol->value.integer.value[0] != mix->capture_source;
	if (change) {
		mix->capture_source = !!ucontrol->value.integer.value[0];
		snapper_set_capture_source(mix);
	}
	return change;
}

#define DEFINE_SNAPPER_MIX(xname,idx,ofs) { \
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,\
	.name = xname, \
	.info = snapper_info_mix, \
	.get = snapper_get_mix, \
	.put = snapper_put_mix, \
	.index = idx,\
	.private_value = ofs, \
}


/*
 */
static snd_kcontrol_new_t tumbler_mixers[] __initdata = {
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	  .name = "Master Playback Volume",
	  .info = tumbler_info_master_volume,
	  .get = tumbler_get_master_volume,
	  .put = tumbler_put_master_volume
	},
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	  .name = "Master Playback Switch",
	  .info = snd_pmac_boolean_stereo_info,
	  .get = tumbler_get_master_switch,
	  .put = tumbler_put_master_switch
	},
	DEFINE_MONO("Tone Control - Bass", bass),
	DEFINE_MONO("Tone Control - Treble", treble),
	DEFINE_MONO("PCM Playback Volume", pcm),
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	  .name = "DRC Range",
	  .info = tumbler_info_drc_value,
	  .get = tumbler_get_drc_value,
	  .put = tumbler_put_drc_value
	},
};

static snd_kcontrol_new_t snapper_mixers[] __initdata = {
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	  .name = "Master Playback Volume",
	  .info = tumbler_info_master_volume,
	  .get = tumbler_get_master_volume,
	  .put = tumbler_put_master_volume
	},
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	  .name = "Master Playback Switch",
	  .info = snd_pmac_boolean_stereo_info,
	  .get = tumbler_get_master_switch,
	  .put = tumbler_put_master_switch
	},
	DEFINE_SNAPPER_MIX("PCM Playback Volume", 0, VOL_IDX_PCM),
	DEFINE_SNAPPER_MIX("PCM Playback Volume", 1, VOL_IDX_PCM2),
	DEFINE_SNAPPER_MIX("Monitor Mix Volume", 0, VOL_IDX_ADC),
	DEFINE_SNAPPER_MONO("Tone Control - Bass", bass),
	DEFINE_SNAPPER_MONO("Tone Control - Treble", treble),
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	  .name = "DRC Range",
	  .info = tumbler_info_drc_value,
	  .get = tumbler_get_drc_value,
	  .put = tumbler_put_drc_value
	},
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	  .name = "Input Source", /* FIXME: "Capture Source" doesn't work properly */
	  .info = snapper_info_capture_source,
	  .get = snapper_get_capture_source,
	  .put = snapper_put_capture_source
	},
};

static snd_kcontrol_new_t tumbler_hp_sw __initdata = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Headphone Playback Switch",
	.info = snd_pmac_boolean_mono_info,
	.get = tumbler_get_mute_switch,
	.put = tumbler_put_mute_switch,
	.private_value = TUMBLER_MUTE_HP,
};
static snd_kcontrol_new_t tumbler_speaker_sw __initdata = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "PC Speaker Playback Switch",
	.info = snd_pmac_boolean_mono_info,
	.get = tumbler_get_mute_switch,
	.put = tumbler_put_mute_switch,
	.private_value = TUMBLER_MUTE_AMP,
};
static snd_kcontrol_new_t tumbler_lineout_sw __initdata = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Line Out Playback Switch",
	.info = snd_pmac_boolean_mono_info,
	.get = tumbler_get_mute_switch,
	.put = tumbler_put_mute_switch,
	.private_value = TUMBLER_MUTE_LINE,
};
static snd_kcontrol_new_t tumbler_drc_sw __initdata = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "DRC Switch",
	.info = snd_pmac_boolean_mono_info,
	.get = tumbler_get_drc_switch,
	.put = tumbler_put_drc_switch
};


#ifdef PMAC_SUPPORT_AUTOMUTE
/*
 * auto-mute stuffs
 */
static int tumbler_detect_headphone(pmac_t *chip)
{
	pmac_tumbler_t *mix = chip->mixer_data;
	int detect = 0;

	if (mix->hp_detect.addr)
		detect |= read_audio_gpio(&mix->hp_detect);
	return detect;
}

static int tumbler_detect_lineout(pmac_t *chip)
{
	pmac_tumbler_t *mix = chip->mixer_data;
	int detect = 0;

	if (mix->line_detect.addr)
		detect |= read_audio_gpio(&mix->line_detect);
	return detect;
}

static void check_mute(pmac_t *chip, pmac_gpio_t *gp, int val, int do_notify, snd_kcontrol_t *sw)
{
	if (check_audio_gpio(gp) != val) {
		write_audio_gpio(gp, val);
		if (do_notify)
			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
				       &sw->id);
	}
}

static struct work_struct device_change;

static void device_change_handler(void *self)
{
	pmac_t *chip = (pmac_t*) self;
	pmac_tumbler_t *mix;
	int headphone, lineout;

	if (!chip)
		return;

	mix = chip->mixer_data;
	snd_assert(mix, return);

	headphone = tumbler_detect_headphone(chip);
	lineout = tumbler_detect_lineout(chip);

	DBG("headphone: %d, lineout: %d\n", headphone, lineout);

	if (headphone || lineout) {
		/* unmute headphone/lineout & mute speaker */
		if (headphone)
			check_mute(chip, &mix->hp_mute, 0, mix->auto_mute_notify,
				   chip->master_sw_ctl);
		if (lineout && mix->line_mute.addr != 0)
			check_mute(chip, &mix->line_mute, 0, mix->auto_mute_notify,
				   chip->lineout_sw_ctl);
		if (mix->anded_reset)
			big_mdelay(10);
		check_mute(chip, &mix->amp_mute, 1, mix->auto_mute_notify,
			   chip->speaker_sw_ctl);
		mix->drc_enable = 0;
	} else {
		/* unmute speaker, mute others */
		check_mute(chip, &mix->amp_mute, 0, mix->auto_mute_notify,
			   chip->speaker_sw_ctl);
		if (mix->anded_reset)
			big_mdelay(10);
		check_mute(chip, &mix->hp_mute, 1, mix->auto_mute_notify,
			   chip->master_sw_ctl);
		if (mix->line_mute.addr != 0)
			check_mute(chip, &mix->line_mute, 1, mix->auto_mute_notify,
				   chip->lineout_sw_ctl);
		mix->drc_enable = 1;
	}
	if (mix->auto_mute_notify) {
		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
				       &chip->hp_detect_ctl->id);
		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
			       &chip->drc_sw_ctl->id);
	}

	/* first set the DRC so the speaker do not explode -ReneR */
	if (chip->model == PMAC_TUMBLER)
		tumbler_set_drc(mix);
	else
		snapper_set_drc(mix);

	/* reset the master volume so the correct amplification is applied */
	tumbler_set_master_volume(mix);
}

static void tumbler_update_automute(pmac_t *chip, int do_notify)
{
	if (chip->auto_mute) {
		pmac_tumbler_t *mix;
		mix = chip->mixer_data;
		snd_assert(mix, return);
		mix->auto_mute_notify = do_notify;
		schedule_work(&device_change);
	}
}
#endif /* PMAC_SUPPORT_AUTOMUTE */


/* interrupt - headphone plug changed */
static irqreturn_t headphone_intr(int irq, void *devid, struct pt_regs *regs)
{
	pmac_t *chip = devid;
	if (chip->update_automute && chip->initialized) {
		chip->update_automute(chip, 1);
		return IRQ_HANDLED;
	}
	return IRQ_NONE;
}

/* look for audio-gpio device */
static struct device_node *find_audio_device(const char *name)
{
	struct device_node *np;
  
	if (! (np = find_devices("gpio")))
		return NULL;
  
	for (np = np->child; np; np = np->sibling) {
		char *property = get_property(np, "audio-gpio", NULL);
		if (property && strcmp(property, name) == 0)
			return np;
	}  
	return NULL;
}

/* look for audio-gpio device */
static struct device_node *find_compatible_audio_device(const char *name)
{
	struct device_node *np;
  
	if (! (np = find_devices("gpio")))
		return NULL;
  
	for (np = np->child; np; np = np->sibling) {
		if (device_is_compatible(np, name))
			return np;
	}  
	return NULL;
}

/* find an audio device and get its address */
static long tumbler_find_device(const char *device, const char *platform, pmac_gpio_t *gp, int is_compatible)
{
	struct device_node *node;
	u32 *base, addr;

	if (is_compatible)
		node = find_compatible_audio_device(device);
	else
		node = find_audio_device(device);
	if (! node) {
		DBG("(W) cannot find audio device %s !\n", device);
		snd_printdd("cannot find device %s\n", device);
		return -ENODEV;
	}

	base = (u32 *)get_property(node, "AAPL,address", NULL);
	if (! base) {
		base = (u32 *)get_property(node, "reg", NULL);
		if (!base) {
			DBG("(E) cannot find address for device %s !\n", device);
			snd_printd("cannot find address for device %s\n", device);
			return -ENODEV;
		}
		addr = *base;
		if (addr < 0x50)
			addr += 0x50;
	} else
		addr = *base;

	gp->addr = addr & 0x0000ffff;
	/* Try to find the active state, default to 0 ! */
	base = (u32 *)get_property(node, "audio-gpio-active-state", NULL);
	if (base) {
		gp->active_state = *base;
		gp->active_val = (*base) ? 0x5 : 0x4;
		gp->inactive_val = (*base) ? 0x4 : 0x5;
	} else {
		u32 *prop = NULL;
		gp->active_state = 0;
		gp->active_val = 0x4;
		gp->inactive_val = 0x5;
		/* Here are some crude hacks to extract the GPIO polarity and
		 * open collector informations out of the do-platform script
		 * as we don't yet have an interpreter for these things
		 */
		if (platform)
			prop = (u32 *)get_property(node, platform, NULL);
		if (prop) {
			if (prop[3] == 0x9 && prop[4] == 0x9) {
				gp->active_val = 0xd;
				gp->inactive_val = 0xc;
			}
			if (prop[3] == 0x1 && prop[4] == 0x1) {
				gp->active_val = 0x5;
				gp->inactive_val = 0x4;
			}
		}
	}

	DBG("(I) GPIO device %s found, offset: %x, active state: %d !\n",
	    device, gp->addr, gp->active_state);

	return (node->n_intrs > 0) ? node->intrs[0].line : 0;
}

/* reset audio */
static void tumbler_reset_audio(pmac_t *chip)
{
	pmac_tumbler_t *mix = chip->mixer_data;

	if (mix->anded_reset) {
		DBG("(I) codec anded reset !\n");
		write_audio_gpio(&mix->hp_mute, 0);
		write_audio_gpio(&mix->amp_mute, 0);
		big_mdelay(200);
		write_audio_gpio(&mix->hp_mute, 1);
		write_audio_gpio(&mix->amp_mute, 1);
		big_mdelay(100);
		write_audio_gpio(&mix->hp_mute, 0);
		write_audio_gpio(&mix->amp_mute, 0);
		big_mdelay(100);
	} else {
		DBG("(I) codec normal reset !\n");

		write_audio_gpio(&mix->audio_reset, 0);
		big_mdelay(200);
		write_audio_gpio(&mix->audio_reset, 1);
		big_mdelay(100);
		write_audio_gpio(&mix->audio_reset, 0);
		big_mdelay(100);
	}
}

#ifdef CONFIG_PM
/* suspend mixer */
static void tumbler_suspend(pmac_t *chip)
{
	pmac_tumbler_t *mix = chip->mixer_data;

	if (mix->headphone_irq >= 0)
		disable_irq(mix->headphone_irq);
	if (mix->lineout_irq >= 0)
		disable_irq(mix->lineout_irq);
	mix->save_master_switch[0] = mix->master_switch[0];
	mix->save_master_switch[1] = mix->master_switch[1];
	mix->save_master_vol[0] = mix->master_vol[0];
	mix->save_master_vol[1] = mix->master_vol[1];
	mix->master_switch[0] = mix->master_switch[1] = 0;
	tumbler_set_master_volume(mix);
	if (!mix->anded_reset) {
		write_audio_gpio(&mix->amp_mute, 1);
		write_audio_gpio(&mix->hp_mute, 1);
	}
	if (chip->model == PMAC_SNAPPER) {
		mix->acs |= 1;
		i2c_smbus_write_byte_data(mix->i2c.client, TAS_REG_ACS, mix->acs);
	}
	if (mix->anded_reset) {
		write_audio_gpio(&mix->amp_mute, 1);
		write_audio_gpio(&mix->hp_mute, 1);
	} else
		write_audio_gpio(&mix->audio_reset, 1);
}

/* resume mixer */
static void tumbler_resume(pmac_t *chip)
{
	pmac_tumbler_t *mix = chip->mixer_data;

	snd_assert(mix, return);

	mix->acs &= ~1;
	mix->master_switch[0] = mix->save_master_switch[0];
	mix->master_switch[1] = mix->save_master_switch[1];
	mix->master_vol[0] = mix->save_master_vol[0];
	mix->master_vol[1] = mix->save_master_vol[1];
	tumbler_reset_audio(chip);
	if (mix->i2c.client && mix->i2c.init_client) {
		if (mix->i2c.init_client(&mix->i2c) < 0)
			printk(KERN_ERR "tumbler_init_client error\n");
	} else
		printk(KERN_ERR "tumbler: i2c is not initialized\n");
	if (chip->model == PMAC_TUMBLER) {
		tumbler_set_mono_volume(mix, &tumbler_pcm_vol_info);
		tumbler_set_mono_volume(mix, &tumbler_bass_vol_info);
		tumbler_set_mono_volume(mix, &tumbler_treble_vol_info);
		tumbler_set_drc(mix);
	} else {
		snapper_set_mix_vol(mix, VOL_IDX_PCM);
		snapper_set_mix_vol(mix, VOL_IDX_PCM2);
		snapper_set_mix_vol(mix, VOL_IDX_ADC);
		tumbler_set_mono_volume(mix, &snapper_bass_vol_info);
		tumbler_set_mono_volume(mix, &snapper_treble_vol_info);
		snapper_set_drc(mix);
		snapper_set_capture_source(mix);
	}
	tumbler_set_master_volume(mix);
	if (chip->update_automute)
		chip->update_automute(chip, 0);
	if (mix->headphone_irq >= 0)
		enable_irq(mix->headphone_irq);
	if (mix->lineout_irq >= 0)
		enable_irq(mix->lineout_irq);
}
#endif

/* initialize tumbler */
static int __init tumbler_init(pmac_t *chip)
{
	int irq;
	pmac_tumbler_t *mix = chip->mixer_data;
	snd_assert(mix, return -EINVAL);

	if (tumbler_find_device("audio-hw-reset",
				"platform-do-hw-reset",
				&mix->audio_reset, 0) < 0)
		tumbler_find_device("hw-reset",
				    "platform-do-hw-reset",
				    &mix->audio_reset, 1);
	if (tumbler_find_device("amp-mute",
				"platform-do-amp-mute",
				&mix->amp_mute, 0) < 0)
		tumbler_find_device("amp-mute",
				    "platform-do-amp-mute",
				    &mix->amp_mute, 1);
	if (tumbler_find_device("headphone-mute",
				"platform-do-headphone-mute",
				&mix->hp_mute, 0) < 0)
		tumbler_find_device("headphone-mute",
				    "platform-do-headphone-mute",
				    &mix->hp_mute, 1);
	if (tumbler_find_device("line-output-mute",
				"platform-do-lineout-mute",
				&mix->line_mute, 0) < 0)
		tumbler_find_device("line-output-mute",
				   "platform-do-lineout-mute",
				    &mix->line_mute, 1);
	irq = tumbler_find_device("headphone-detect",
				  NULL, &mix->hp_detect, 0);
	if (irq < 0)
		irq = tumbler_find_device("headphone-detect",
					  NULL, &mix->hp_detect, 1);
	if (irq < 0)
		irq = tumbler_find_device("keywest-gpio15",
					  NULL, &mix->hp_detect, 1);
	mix->headphone_irq = irq;
 	irq = tumbler_find_device("line-output-detect",
				  NULL, &mix->line_detect, 0);
 	if (irq < 0)
		irq = tumbler_find_device("line-output-detect",
					  NULL, &mix->line_detect, 1);
	mix->lineout_irq = irq;

	tumbler_reset_audio(chip);
  
	return 0;
}

static void tumbler_cleanup(pmac_t *chip)
{
	pmac_tumbler_t *mix = chip->mixer_data;
	if (! mix)
		return;

	if (mix->headphone_irq >= 0)
		free_irq(mix->headphone_irq, chip);
	if (mix->lineout_irq >= 0)
		free_irq(mix->lineout_irq, chip);
	tumbler_gpio_free(&mix->audio_reset);
	tumbler_gpio_free(&mix->amp_mute);
	tumbler_gpio_free(&mix->hp_mute);
	tumbler_gpio_free(&mix->hp_detect);
	snd_pmac_keywest_cleanup(&mix->i2c);
	kfree(mix);
	chip->mixer_data = NULL;
}

/* exported */
int __init snd_pmac_tumbler_init(pmac_t *chip)
{
	int i, err;
	pmac_tumbler_t *mix;
	u32 *paddr;
	struct device_node *tas_node, *np;
	char *chipname;

#ifdef CONFIG_KMOD
	if (current->fs->root)
		request_module("i2c-keywest");
#endif /* CONFIG_KMOD */	

	mix = kmalloc(sizeof(*mix), GFP_KERNEL);
	if (! mix)
		return -ENOMEM;
	memset(mix, 0, sizeof(*mix));
	mix->headphone_irq = -1;

	chip->mixer_data = mix;
	chip->mixer_free = tumbler_cleanup;
	mix->anded_reset = 0;
	mix->reset_on_sleep = 1;

	for (np = chip->node->child; np; np = np->sibling) {
		if (!strcmp(np->name, "sound")) {
			if (get_property(np, "has-anded-reset", NULL))
				mix->anded_reset = 1;
			if (get_property(np, "layout-id", NULL))
				mix->reset_on_sleep = 0;
			break;
		}
	}
	if ((err = tumbler_init(chip)) < 0)
		return err;

	/* set up TAS */
	tas_node = find_devices("deq");
	if (tas_node == NULL)
		tas_node = find_devices("codec");
	if (tas_node == NULL)
		return -ENODEV;

	paddr = (u32 *)get_property(tas_node, "i2c-address", NULL);
	if (paddr == NULL)
		paddr = (u32 *)get_property(tas_node, "reg", NULL);
	if (paddr)
		mix->i2c.addr = (*paddr) >> 1;
	else
		mix->i2c.addr = TAS_I2C_ADDR;

	DBG("(I) TAS i2c address is: %x\n", mix->i2c.addr);

	if (chip->model == PMAC_TUMBLER) {
		mix->i2c.init_client = tumbler_init_client;
		mix->i2c.name = "TAS3001c";
		chipname = "Tumbler";
	} else {
		mix->i2c.init_client = snapper_init_client;
		mix->i2c.name = "TAS3004";
		chipname = "Snapper";
	}

	if ((err = snd_pmac_keywest_init(&mix->i2c)) < 0)
		return err;

	/*
	 * build mixers
	 */
	sprintf(chip->card->mixername, "PowerMac %s", chipname);

	if (chip->model == PMAC_TUMBLER) {
		for (i = 0; i < ARRAY_SIZE(tumbler_mixers); i++) {
			if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&tumbler_mixers[i], chip))) < 0)
				return err;
		}
	} else {
		for (i = 0; i < ARRAY_SIZE(snapper_mixers); i++) {
			if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snapper_mixers[i], chip))) < 0)
				return err;
		}
	}
	chip->master_sw_ctl = snd_ctl_new1(&tumbler_hp_sw, chip);
	if ((err = snd_ctl_add(chip->card, chip->master_sw_ctl)) < 0)
		return err;
	chip->speaker_sw_ctl = snd_ctl_new1(&tumbler_speaker_sw, chip);
	if ((err = snd_ctl_add(chip->card, chip->speaker_sw_ctl)) < 0)
		return err;
	if (mix->line_mute.addr != 0) {
		chip->lineout_sw_ctl = snd_ctl_new1(&tumbler_lineout_sw, chip);
		if ((err = snd_ctl_add(chip->card, chip->lineout_sw_ctl)) < 0)
			return err;
	}
	chip->drc_sw_ctl = snd_ctl_new1(&tumbler_drc_sw, chip);
	if ((err = snd_ctl_add(chip->card, chip->drc_sw_ctl)) < 0)
		return err;

#ifdef CONFIG_PM
	chip->suspend = tumbler_suspend;
	chip->resume = tumbler_resume;
#endif

	INIT_WORK(&device_change, device_change_handler, (void *)chip);

#ifdef PMAC_SUPPORT_AUTOMUTE
	if ((mix->headphone_irq >=0 || mix->lineout_irq >= 0)
	    && (err = snd_pmac_add_automute(chip)) < 0)
		return err;
	chip->detect_headphone = tumbler_detect_headphone;
	chip->update_automute = tumbler_update_automute;
	tumbler_update_automute(chip, 0); /* update the status only */

	/* activate headphone status interrupts */
  	if (mix->headphone_irq >= 0) {
		unsigned char val;
		if ((err = request_irq(mix->headphone_irq, headphone_intr, 0,
				       "Sound Headphone Detection", chip)) < 0)
			return 0;
		/* activate headphone status interrupts */
		val = do_gpio_read(&mix->hp_detect);
		do_gpio_write(&mix->hp_detect, val | 0x80);
	}
  	if (mix->lineout_irq >= 0) {
		unsigned char val;
		if ((err = request_irq(mix->lineout_irq, headphone_intr, 0,
				       "Sound Lineout Detection", chip)) < 0)
			return 0;
		/* activate headphone status interrupts */
		val = do_gpio_read(&mix->line_detect);
		do_gpio_write(&mix->line_detect, val | 0x80);
	}
#endif

	return 0;
}