summaryrefslogtreecommitdiffstats
path: root/sound/pci/au88x0/au88x0_eq.c
blob: abaf9f912784a93b8cb3b1ebc5f7eeb60a4e5247 (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
// SPDX-License-Identifier: GPL-2.0-or-later
/***************************************************************************
 *            au88x0_eq.c
 *  Aureal Vortex Hardware EQ control/access.
 *
 *  Sun Jun  8 18:19:19 2003
 *  2003  Manuel Jander (mjander@users.sourceforge.net)
 *  
 *  02 July 2003: First time something works :)
 *  November 2003: A3D Bypass code completed but untested.
 *
 *  TODO:
 *     - Debug (testing)
 *     - Test peak visualization support.
 *
 ****************************************************************************/

/*
 */

/*
 The Aureal Hardware EQ is found on AU8810 and AU8830 chips only.
 it has 4 inputs (2 for general mix, 2 for A3D) and 2 outputs (supposed 
 to be routed to the codec).
*/

#include "au88x0.h"
#include "au88x0_eq.h"
#include "au88x0_eqdata.c"

#define VORTEX_EQ_BASE	 0x2b000
#define VORTEX_EQ_DEST   (VORTEX_EQ_BASE + 0x410)
#define VORTEX_EQ_SOURCE (VORTEX_EQ_BASE + 0x430)
#define VORTEX_EQ_CTRL   (VORTEX_EQ_BASE + 0x440)

#define VORTEX_BAND_COEFF_SIZE 0x30

/* CEqHw.s */
static void vortex_EqHw_SetTimeConsts(vortex_t * vortex, u16 gain, u16 level)
{
	hwwrite(vortex->mmio, 0x2b3c4, gain);
	hwwrite(vortex->mmio, 0x2b3c8, level);
}

static inline u16 sign_invert(u16 a)
{
	/* -(-32768) -> -32768 so we do -(-32768) -> 32767 to make the result positive */
	if (a == (u16)-32768)
		return 32767;
	else
		return -a;
}

static void vortex_EqHw_SetLeftCoefs(vortex_t * vortex, u16 coefs[])
{
	eqhw_t *eqhw = &(vortex->eq.this04);
	int i = 0, n /*esp2c */;

	for (n = 0; n < eqhw->this04; n++) {
		hwwrite(vortex->mmio, 0x2b000 + n * 0x30, coefs[i + 0]);
		hwwrite(vortex->mmio, 0x2b004 + n * 0x30, coefs[i + 1]);

		if (eqhw->this08 == 0) {
			hwwrite(vortex->mmio, 0x2b008 + n * 0x30, coefs[i + 2]);
			hwwrite(vortex->mmio, 0x2b00c + n * 0x30, coefs[i + 3]);
			hwwrite(vortex->mmio, 0x2b010 + n * 0x30, coefs[i + 4]);
		} else {
			hwwrite(vortex->mmio, 0x2b008 + n * 0x30, sign_invert(coefs[2 + i]));
			hwwrite(vortex->mmio, 0x2b00c + n * 0x30, sign_invert(coefs[3 + i]));
		        hwwrite(vortex->mmio, 0x2b010 + n * 0x30, sign_invert(coefs[4 + i]));
		}
		i += 5;
	}
}

static void vortex_EqHw_SetRightCoefs(vortex_t * vortex, u16 coefs[])
{
	eqhw_t *eqhw = &(vortex->eq.this04);
	int i = 0, n /*esp2c */;

	for (n = 0; n < eqhw->this04; n++) {
		hwwrite(vortex->mmio, 0x2b1e0 + n * 0x30, coefs[0 + i]);
		hwwrite(vortex->mmio, 0x2b1e4 + n * 0x30, coefs[1 + i]);

		if (eqhw->this08 == 0) {
			hwwrite(vortex->mmio, 0x2b1e8 + n * 0x30, coefs[2 + i]);
			hwwrite(vortex->mmio, 0x2b1ec + n * 0x30, coefs[3 + i]);
			hwwrite(vortex->mmio, 0x2b1f0 + n * 0x30, coefs[4 + i]);
		} else {
			hwwrite(vortex->mmio, 0x2b1e8 + n * 0x30, sign_invert(coefs[2 + i]));
			hwwrite(vortex->mmio, 0x2b1ec + n * 0x30, sign_invert(coefs[3 + i]));
			hwwrite(vortex->mmio, 0x2b1f0 + n * 0x30, sign_invert(coefs[4 + i]));
		}
		i += 5;
	}

}

static void vortex_EqHw_SetLeftStates(vortex_t * vortex, u16 a[], u16 b[])
{
	eqhw_t *eqhw = &(vortex->eq.this04);
	int i = 0, ebx;

	hwwrite(vortex->mmio, 0x2b3fc, a[0]);
	hwwrite(vortex->mmio, 0x2b400, a[1]);

	for (ebx = 0; ebx < eqhw->this04; ebx++) {
		hwwrite(vortex->mmio, 0x2b014 + (i * 0xc), b[i]);
		hwwrite(vortex->mmio, 0x2b018 + (i * 0xc), b[1 + i]);
		hwwrite(vortex->mmio, 0x2b01c + (i * 0xc), b[2 + i]);
		hwwrite(vortex->mmio, 0x2b020 + (i * 0xc), b[3 + i]);
		i += 4;
	}
}

static void vortex_EqHw_SetRightStates(vortex_t * vortex, u16 a[], u16 b[])
{
	eqhw_t *eqhw = &(vortex->eq.this04);
	int i = 0, ebx;

	hwwrite(vortex->mmio, 0x2b404, a[0]);
	hwwrite(vortex->mmio, 0x2b408, a[1]);

	for (ebx = 0; ebx < eqhw->this04; ebx++) {
		hwwrite(vortex->mmio, 0x2b1f4 + (i * 0xc), b[i]);
		hwwrite(vortex->mmio, 0x2b1f8 + (i * 0xc), b[1 + i]);
		hwwrite(vortex->mmio, 0x2b1fc + (i * 0xc), b[2 + i]);
		hwwrite(vortex->mmio, 0x2b200 + (i * 0xc), b[3 + i]);
		i += 4;
	}
}

#if 0
static void vortex_EqHw_GetTimeConsts(vortex_t * vortex, u16 * a, u16 * b)
{
	*a = hwread(vortex->mmio, 0x2b3c4);
	*b = hwread(vortex->mmio, 0x2b3c8);
}

static void vortex_EqHw_GetLeftCoefs(vortex_t * vortex, u16 a[])
{

}

static void vortex_EqHw_GetRightCoefs(vortex_t * vortex, u16 a[])
{

}

static void vortex_EqHw_GetLeftStates(vortex_t * vortex, u16 * a, u16 b[])
{

}

static void vortex_EqHw_GetRightStates(vortex_t * vortex, u16 * a, u16 b[])
{

}

#endif
/* Mix Gains */
static void vortex_EqHw_SetBypassGain(vortex_t * vortex, u16 a, u16 b)
{
	eqhw_t *eqhw = &(vortex->eq.this04);
	if (eqhw->this08 == 0) {
		hwwrite(vortex->mmio, 0x2b3d4, a);
		hwwrite(vortex->mmio, 0x2b3ec, b);
	} else {
		hwwrite(vortex->mmio, 0x2b3d4, sign_invert(a));
		hwwrite(vortex->mmio, 0x2b3ec, sign_invert(b));
	}
}

static void vortex_EqHw_SetA3DBypassGain(vortex_t * vortex, u16 a, u16 b)
{

	hwwrite(vortex->mmio, 0x2b3e0, a);
	hwwrite(vortex->mmio, 0x2b3f8, b);
}

#if 0
static void vortex_EqHw_SetCurrBypassGain(vortex_t * vortex, u16 a, u16 b)
{

	hwwrite(vortex->mmio, 0x2b3d0, a);
	hwwrite(vortex->mmio, 0x2b3e8, b);
}

static void vortex_EqHw_SetCurrA3DBypassGain(vortex_t * vortex, u16 a, u16 b)
{

	hwwrite(vortex->mmio, 0x2b3dc, a);
	hwwrite(vortex->mmio, 0x2b3f4, b);
}

#endif
static void
vortex_EqHw_SetLeftGainsSingleTarget(vortex_t * vortex, u16 index, u16 b)
{
	hwwrite(vortex->mmio, 0x2b02c + (index * 0x30), b);
}

static void
vortex_EqHw_SetRightGainsSingleTarget(vortex_t * vortex, u16 index, u16 b)
{
	hwwrite(vortex->mmio, 0x2b20c + (index * 0x30), b);
}

static void vortex_EqHw_SetLeftGainsTarget(vortex_t * vortex, u16 a[])
{
	eqhw_t *eqhw = &(vortex->eq.this04);
	int ebx;

	for (ebx = 0; ebx < eqhw->this04; ebx++) {
		hwwrite(vortex->mmio, 0x2b02c + ebx * 0x30, a[ebx]);
	}
}

static void vortex_EqHw_SetRightGainsTarget(vortex_t * vortex, u16 a[])
{
	eqhw_t *eqhw = &(vortex->eq.this04);
	int ebx;

	for (ebx = 0; ebx < eqhw->this04; ebx++) {
		hwwrite(vortex->mmio, 0x2b20c + ebx * 0x30, a[ebx]);
	}
}

static void vortex_EqHw_SetLeftGainsCurrent(vortex_t * vortex, u16 a[])
{
	eqhw_t *eqhw = &(vortex->eq.this04);
	int ebx;

	for (ebx = 0; ebx < eqhw->this04; ebx++) {
		hwwrite(vortex->mmio, 0x2b028 + ebx * 0x30, a[ebx]);
	}
}

static void vortex_EqHw_SetRightGainsCurrent(vortex_t * vortex, u16 a[])
{
	eqhw_t *eqhw = &(vortex->eq.this04);
	int ebx;

	for (ebx = 0; ebx < eqhw->this04; ebx++) {
		hwwrite(vortex->mmio, 0x2b208 + ebx * 0x30, a[ebx]);
	}
}

#if 0
static void vortex_EqHw_GetLeftGainsTarget(vortex_t * vortex, u16 a[])
{
	eqhw_t *eqhw = &(vortex->eq.this04);
	int ebx = 0;

	if (eqhw->this04 < 0)
		return;

	do {
		a[ebx] = hwread(vortex->mmio, 0x2b02c + ebx * 0x30);
		ebx++;
	}
	while (ebx < eqhw->this04);
}

static void vortex_EqHw_GetRightGainsTarget(vortex_t * vortex, u16 a[])
{
	eqhw_t *eqhw = &(vortex->eq.this04);
	int ebx = 0;

	if (eqhw->this04 < 0)
		return;

	do {
		a[ebx] = hwread(vortex->mmio, 0x2b20c + ebx * 0x30);
		ebx++;
	}
	while (ebx < eqhw->this04);
}

static void vortex_EqHw_GetLeftGainsCurrent(vortex_t * vortex, u16 a[])
{
	eqhw_t *eqhw = &(vortex->eq.this04);
	int ebx = 0;

	if (eqhw->this04 < 0)
		return;

	do {
		a[ebx] = hwread(vortex->mmio, 0x2b028 + ebx * 0x30);
		ebx++;
	}
	while (ebx < eqhw->this04);
}

static void vortex_EqHw_GetRightGainsCurrent(vortex_t * vortex, u16 a[])
{
	eqhw_t *eqhw = &(vortex->eq.this04);
	int ebx = 0;

	if (eqhw->this04 < 0)
		return;

	do {
		a[ebx] = hwread(vortex->mmio, 0x2b208 + ebx * 0x30);
		ebx++;
	}
	while (ebx < eqhw->this04);
}

#endif
/* EQ band levels settings */
static void vortex_EqHw_SetLevels(vortex_t * vortex, u16 peaks[])
{
	eqhw_t *eqhw = &(vortex->eq.this04);
	int i;

	/* set left peaks */
	for (i = 0; i < eqhw->this04; i++) {
		hwwrite(vortex->mmio, 0x2b024 + i * VORTEX_BAND_COEFF_SIZE, peaks[i]);
	}

	hwwrite(vortex->mmio, 0x2b3cc, peaks[eqhw->this04]);
	hwwrite(vortex->mmio, 0x2b3d8, peaks[eqhw->this04 + 1]);

	/* set right peaks */
	for (i = 0; i < eqhw->this04; i++) {
		hwwrite(vortex->mmio, 0x2b204 + i * VORTEX_BAND_COEFF_SIZE,
			peaks[i + (eqhw->this04 + 2)]);
	}

	hwwrite(vortex->mmio, 0x2b3e4, peaks[2 + (eqhw->this04 * 2)]);
	hwwrite(vortex->mmio, 0x2b3f0, peaks[3 + (eqhw->this04 * 2)]);
}

#if 0
static void vortex_EqHw_GetLevels(vortex_t * vortex, u16 a[])
{
	eqhw_t *eqhw = &(vortex->eq.this04);
	int ebx;

	if (eqhw->this04 < 0)
		return;

	ebx = 0;
	do {
		a[ebx] = hwread(vortex->mmio, 0x2b024 + ebx * 0x30);
		ebx++;
	}
	while (ebx < eqhw->this04);

	a[eqhw->this04] = hwread(vortex->mmio, 0x2b3cc);
	a[eqhw->this04 + 1] = hwread(vortex->mmio, 0x2b3d8);

	ebx = 0;
	do {
		a[ebx + (eqhw->this04 + 2)] =
		    hwread(vortex->mmio, 0x2b204 + ebx * 0x30);
		ebx++;
	}
	while (ebx < eqhw->this04);

	a[2 + (eqhw->this04 * 2)] = hwread(vortex->mmio, 0x2b3e4);
	a[3 + (eqhw->this04 * 2)] = hwread(vortex->mmio, 0x2b3f0);
}

#endif
/* Global Control */
static void vortex_EqHw_SetControlReg(vortex_t * vortex, u32 reg)
{
	hwwrite(vortex->mmio, 0x2b440, reg);
}

static void vortex_EqHw_SetSampleRate(vortex_t * vortex, u32 sr)
{
	hwwrite(vortex->mmio, 0x2b440, ((sr & 0x1f) << 3) | 0xb800);
}

#if 0
static void vortex_EqHw_GetControlReg(vortex_t * vortex, u32 *reg)
{
	*reg = hwread(vortex->mmio, 0x2b440);
}

static void vortex_EqHw_GetSampleRate(vortex_t * vortex, u32 *sr)
{
	*sr = (hwread(vortex->mmio, 0x2b440) >> 3) & 0x1f;
}

#endif
static void vortex_EqHw_Enable(vortex_t * vortex)
{
	hwwrite(vortex->mmio, VORTEX_EQ_CTRL, 0xf001);
}

static void vortex_EqHw_Disable(vortex_t * vortex)
{
	hwwrite(vortex->mmio, VORTEX_EQ_CTRL, 0xf000);
}

/* Reset (zero) buffers */
static void vortex_EqHw_ZeroIO(vortex_t * vortex)
{
	int i;
	for (i = 0; i < 0x8; i++)
		hwwrite(vortex->mmio, VORTEX_EQ_DEST + (i << 2), 0x0);
	for (i = 0; i < 0x4; i++)
		hwwrite(vortex->mmio, VORTEX_EQ_SOURCE + (i << 2), 0x0);
}

static void vortex_EqHw_ZeroA3DIO(vortex_t * vortex)
{
	int i;
	for (i = 0; i < 0x4; i++)
		hwwrite(vortex->mmio, VORTEX_EQ_DEST + (i << 2), 0x0);
}

static void vortex_EqHw_ZeroState(vortex_t * vortex)
{

	vortex_EqHw_SetControlReg(vortex, 0);
	vortex_EqHw_ZeroIO(vortex);
	hwwrite(vortex->mmio, 0x2b3c0, 0);

	vortex_EqHw_SetTimeConsts(vortex, 0, 0);

	vortex_EqHw_SetLeftCoefs(vortex, asEqCoefsZeros);
	vortex_EqHw_SetRightCoefs(vortex, asEqCoefsZeros);

	vortex_EqHw_SetLeftGainsCurrent(vortex, eq_gains_zero);
	vortex_EqHw_SetRightGainsCurrent(vortex, eq_gains_zero);
	vortex_EqHw_SetLeftGainsTarget(vortex, eq_gains_zero);
	vortex_EqHw_SetRightGainsTarget(vortex, eq_gains_zero);

	vortex_EqHw_SetBypassGain(vortex, 0, 0);
	//vortex_EqHw_SetCurrBypassGain(vortex, 0, 0);
	vortex_EqHw_SetA3DBypassGain(vortex, 0, 0);
	//vortex_EqHw_SetCurrA3DBypassGain(vortex, 0, 0);
	vortex_EqHw_SetLeftStates(vortex, eq_states_zero, asEqOutStateZeros);
	vortex_EqHw_SetRightStates(vortex, eq_states_zero, asEqOutStateZeros);
	vortex_EqHw_SetLevels(vortex, (u16 *) eq_levels);
}

/* Program coeficients as pass through */
static void vortex_EqHw_ProgramPipe(vortex_t * vortex)
{
	vortex_EqHw_SetTimeConsts(vortex, 0, 0);

	vortex_EqHw_SetLeftCoefs(vortex, asEqCoefsPipes);
	vortex_EqHw_SetRightCoefs(vortex, asEqCoefsPipes);

	vortex_EqHw_SetLeftGainsCurrent(vortex, eq_gains_current);
	vortex_EqHw_SetRightGainsCurrent(vortex, eq_gains_current);
	vortex_EqHw_SetLeftGainsTarget(vortex, eq_gains_current);
	vortex_EqHw_SetRightGainsTarget(vortex, eq_gains_current);
}

/* Program EQ block as 10 band Equalizer */
static void
vortex_EqHw_Program10Band(vortex_t * vortex, auxxEqCoeffSet_t * coefset)
{

	vortex_EqHw_SetTimeConsts(vortex, 0xc, 0x7fe0);

	vortex_EqHw_SetLeftCoefs(vortex, coefset->LeftCoefs);
	vortex_EqHw_SetRightCoefs(vortex, coefset->RightCoefs);

	vortex_EqHw_SetLeftGainsCurrent(vortex, coefset->LeftGains);

	vortex_EqHw_SetRightGainsTarget(vortex, coefset->RightGains);
	vortex_EqHw_SetLeftGainsTarget(vortex, coefset->LeftGains);

	vortex_EqHw_SetRightGainsCurrent(vortex, coefset->RightGains);
}

/* Read all EQ peaks. (think VU meter) */
static void vortex_EqHw_GetTenBandLevels(vortex_t * vortex, u16 peaks[])
{
	eqhw_t *eqhw = &(vortex->eq.this04);
	int i;

	if (eqhw->this04 <= 0)
		return;

	for (i = 0; i < eqhw->this04; i++)
		peaks[i] = hwread(vortex->mmio, 0x2B024 + i * 0x30);
	for (i = 0; i < eqhw->this04; i++)
		peaks[i + eqhw->this04] =
		    hwread(vortex->mmio, 0x2B204 + i * 0x30);
}

/* CEqlzr.s */

static int vortex_Eqlzr_GetLeftGain(vortex_t * vortex, u16 index, u16 * gain)
{
	eqlzr_t *eq = &(vortex->eq);

	if (eq->this28) {
		*gain = eq->this130[index];
		return 0;
	}
	return 1;
}

static void vortex_Eqlzr_SetLeftGain(vortex_t * vortex, u16 index, u16 gain)
{
	eqlzr_t *eq = &(vortex->eq);

	if (eq->this28 == 0)
		return;

	eq->this130[index] = gain;
	if (eq->this54)
		return;

	vortex_EqHw_SetLeftGainsSingleTarget(vortex, index, gain);
}

static int vortex_Eqlzr_GetRightGain(vortex_t * vortex, u16 index, u16 * gain)
{
	eqlzr_t *eq = &(vortex->eq);

	if (eq->this28) {
		*gain = eq->this130[index + eq->this10];
		return 0;
	}
	return 1;
}

static void vortex_Eqlzr_SetRightGain(vortex_t * vortex, u16 index, u16 gain)
{
	eqlzr_t *eq = &(vortex->eq);

	if (eq->this28 == 0)
		return;

	eq->this130[index + eq->this10] = gain;
	if (eq->this54)
		return;

	vortex_EqHw_SetRightGainsSingleTarget(vortex, index, gain);
}

#if 0
static int
vortex_Eqlzr_GetAllBands(vortex_t * vortex, u16 * gains, s32 *cnt)
{
	eqlzr_t *eq = &(vortex->eq);
	int si = 0;

	if (eq->this10 == 0)
		return 1;

	{
		if (vortex_Eqlzr_GetLeftGain(vortex, si, &gains[si]))
			return 1;
		if (vortex_Eqlzr_GetRightGain
		    (vortex, si, &gains[si + eq->this10]))
			return 1;
		si++;
	}
	while (eq->this10 > si) ;
	*cnt = si * 2;
	return 0;
}
#endif
static int vortex_Eqlzr_SetAllBandsFromActiveCoeffSet(vortex_t * vortex)
{
	eqlzr_t *eq = &(vortex->eq);

	vortex_EqHw_SetLeftGainsTarget(vortex, eq->this130);
	vortex_EqHw_SetRightGainsTarget(vortex, &(eq->this130[eq->this10]));

	return 0;
}

static int
vortex_Eqlzr_SetAllBands(vortex_t * vortex, u16 gains[], s32 count)
{
	eqlzr_t *eq = &(vortex->eq);
	int i;

	if (((eq->this10) * 2 != count) || (eq->this28 == 0))
		return 1;

	for (i = 0; i < count; i++) {
		eq->this130[i] = gains[i];
	}
	
	if (eq->this54)
		return 0;
	return vortex_Eqlzr_SetAllBandsFromActiveCoeffSet(vortex);
}

static void
vortex_Eqlzr_SetA3dBypassGain(vortex_t * vortex, u32 a, u32 b)
{
	eqlzr_t *eq = &(vortex->eq);
	u32 eax, ebx;

	eq->this58 = a;
	eq->this5c = b;
	if (eq->this54)
		eax = eq->this0e;
	else
		eax = eq->this0a;
	ebx = (eax * eq->this58) >> 0x10;
	eax = (eax * eq->this5c) >> 0x10;
	vortex_EqHw_SetA3DBypassGain(vortex, ebx, eax);
}

static void vortex_Eqlzr_ProgramA3dBypassGain(vortex_t * vortex)
{
	eqlzr_t *eq = &(vortex->eq);
	u32 eax, ebx;

	if (eq->this54)
		eax = eq->this0e;
	else
		eax = eq->this0a;
	ebx = (eax * eq->this58) >> 0x10;
	eax = (eax * eq->this5c) >> 0x10;
	vortex_EqHw_SetA3DBypassGain(vortex, ebx, eax);
}

static void vortex_Eqlzr_ShutDownA3d(vortex_t * vortex)
{
	if (vortex != NULL)
		vortex_EqHw_ZeroA3DIO(vortex);
}

static void vortex_Eqlzr_SetBypass(vortex_t * vortex, u32 bp)
{
	eqlzr_t *eq = &(vortex->eq);
	
	if ((eq->this28) && (bp == 0)) {
		/* EQ enabled */
		vortex_Eqlzr_SetAllBandsFromActiveCoeffSet(vortex);
		vortex_EqHw_SetBypassGain(vortex, eq->this08, eq->this08);
	} else {
		/* EQ disabled. */
		vortex_EqHw_SetLeftGainsTarget(vortex, eq->this14_array);
		vortex_EqHw_SetRightGainsTarget(vortex, eq->this14_array);
		vortex_EqHw_SetBypassGain(vortex, eq->this0c, eq->this0c);
	}
	vortex_Eqlzr_ProgramA3dBypassGain(vortex);
}

static void vortex_Eqlzr_ReadAndSetActiveCoefSet(vortex_t * vortex)
{
	eqlzr_t *eq = &(vortex->eq);

	/* Set EQ BiQuad filter coeficients */
	memcpy(&(eq->coefset), &asEqCoefsNormal, sizeof(auxxEqCoeffSet_t));
	/* Set EQ Band gain levels and dump into hardware registers. */
	vortex_Eqlzr_SetAllBands(vortex, eq_gains_normal, eq->this10 * 2);
}

static int vortex_Eqlzr_GetAllPeaks(vortex_t * vortex, u16 * peaks, int *count)
{
	eqlzr_t *eq = &(vortex->eq);

	if (eq->this10 == 0)
		return 1;
	*count = eq->this10 * 2;
	vortex_EqHw_GetTenBandLevels(vortex, peaks);
	return 0;
}

#if 0
static auxxEqCoeffSet_t *vortex_Eqlzr_GetActiveCoefSet(vortex_t * vortex)
{
	eqlzr_t *eq = &(vortex->eq);

	return (&(eq->coefset));
}
#endif
static void vortex_Eqlzr_init(vortex_t * vortex)
{
	eqlzr_t *eq = &(vortex->eq);

	/* Object constructor */
	//eq->this04 = 0;
	eq->this08 = 0;		/* Bypass gain with EQ in use. */
	eq->this0a = 0x5999;
	eq->this0c = 0x5999;	/* Bypass gain with EQ disabled. */
	eq->this0e = 0x5999;

	eq->this10 = 0xa;	/* 10 eq frequency bands. */
	eq->this04.this04 = eq->this10;
	eq->this28 = 0x1;	/* if 1 => Allow read access to this130 (gains) */
	eq->this54 = 0x0;	/* if 1 => Dont Allow access to hardware (gains) */
	eq->this58 = 0xffff;
	eq->this5c = 0xffff;

	/* Set gains. */
	memset(eq->this14_array, 0, sizeof(eq->this14_array));

	/* Actual init. */
	vortex_EqHw_ZeroState(vortex);
	vortex_EqHw_SetSampleRate(vortex, 0x11);
	vortex_Eqlzr_ReadAndSetActiveCoefSet(vortex);

	vortex_EqHw_Program10Band(vortex, &(eq->coefset));
	vortex_Eqlzr_SetBypass(vortex, eq->this54);
	vortex_Eqlzr_SetA3dBypassGain(vortex, 0, 0);
	vortex_EqHw_Enable(vortex);
}

static void vortex_Eqlzr_shutdown(vortex_t * vortex)
{
	vortex_Eqlzr_ShutDownA3d(vortex);
	vortex_EqHw_ProgramPipe(vortex);
	vortex_EqHw_Disable(vortex);
}

/* ALSA interface */

/* Control interface */
#define snd_vortex_eqtoggle_info	snd_ctl_boolean_mono_info

static int
snd_vortex_eqtoggle_get(struct snd_kcontrol *kcontrol,
			struct snd_ctl_elem_value *ucontrol)
{
	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
	eqlzr_t *eq = &(vortex->eq);
	//int i = kcontrol->private_value;

	ucontrol->value.integer.value[0] = eq->this54 ? 0 : 1;

	return 0;
}

static int
snd_vortex_eqtoggle_put(struct snd_kcontrol *kcontrol,
			struct snd_ctl_elem_value *ucontrol)
{
	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
	eqlzr_t *eq = &(vortex->eq);
	//int i = kcontrol->private_value;

	eq->this54 = ucontrol->value.integer.value[0] ? 0 : 1;
	vortex_Eqlzr_SetBypass(vortex, eq->this54);

	return 1;		/* Allways changes */
}

static const struct snd_kcontrol_new vortex_eqtoggle_kcontrol = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "EQ Enable",
	.index = 0,
	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.private_value = 0,
	.info = snd_vortex_eqtoggle_info,
	.get = snd_vortex_eqtoggle_get,
	.put = snd_vortex_eqtoggle_put
};

static int
snd_vortex_eq_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	uinfo->value.integer.min = 0x0000;
	uinfo->value.integer.max = 0x7fff;
	return 0;
}

static int
snd_vortex_eq_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
	int i = kcontrol->private_value;
	u16 gainL = 0, gainR = 0;

	vortex_Eqlzr_GetLeftGain(vortex, i, &gainL);
	vortex_Eqlzr_GetRightGain(vortex, i, &gainR);
	ucontrol->value.integer.value[0] = gainL;
	ucontrol->value.integer.value[1] = gainR;
	return 0;
}

static int
snd_vortex_eq_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
	int changed = 0, i = kcontrol->private_value;
	u16 gainL = 0, gainR = 0;

	vortex_Eqlzr_GetLeftGain(vortex, i, &gainL);
	vortex_Eqlzr_GetRightGain(vortex, i, &gainR);

	if (gainL != ucontrol->value.integer.value[0]) {
		vortex_Eqlzr_SetLeftGain(vortex, i,
					 ucontrol->value.integer.value[0]);
		changed = 1;
	}
	if (gainR != ucontrol->value.integer.value[1]) {
		vortex_Eqlzr_SetRightGain(vortex, i,
					  ucontrol->value.integer.value[1]);
		changed = 1;
	}
	return changed;
}

static const struct snd_kcontrol_new vortex_eq_kcontrol = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "                        .",
	.index = 0,
	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.private_value = 0,
	.info = snd_vortex_eq_info,
	.get = snd_vortex_eq_get,
	.put = snd_vortex_eq_put
};

static int
snd_vortex_peaks_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 20;
	uinfo->value.integer.min = 0x0000;
	uinfo->value.integer.max = 0x7fff;
	return 0;
}

static int
snd_vortex_peaks_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
	int i, count = 0;
	u16 peaks[20];

	vortex_Eqlzr_GetAllPeaks(vortex, peaks, &count);
	if (count != 20) {
		dev_err(vortex->card->dev,
			"peak count error 20 != %d\n", count);
		return -1;
	}
	for (i = 0; i < 20; i++)
		ucontrol->value.integer.value[i] = peaks[i];

	return 0;
}

static const struct snd_kcontrol_new vortex_levels_kcontrol = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "EQ Peaks",
	.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
	.info = snd_vortex_peaks_info,
	.get = snd_vortex_peaks_get,
};

/* EQ band gain labels. */
static char *EqBandLabels[10] = {
	"EQ0 31Hz\0",
	"EQ1 63Hz\0",
	"EQ2 125Hz\0",
	"EQ3 250Hz\0",
	"EQ4 500Hz\0",
	"EQ5 1KHz\0",
	"EQ6 2KHz\0",
	"EQ7 4KHz\0",
	"EQ8 8KHz\0",
	"EQ9 16KHz\0",
};

/* ALSA driver entry points. Init and exit. */
static int vortex_eq_init(vortex_t *vortex)
{
	struct snd_kcontrol *kcontrol;
	int err, i;

	vortex_Eqlzr_init(vortex);

	if ((kcontrol =
	     snd_ctl_new1(&vortex_eqtoggle_kcontrol, vortex)) == NULL)
		return -ENOMEM;
	kcontrol->private_value = 0;
	if ((err = snd_ctl_add(vortex->card, kcontrol)) < 0)
		return err;

	/* EQ gain controls */
	for (i = 0; i < 10; i++) {
		if ((kcontrol =
		     snd_ctl_new1(&vortex_eq_kcontrol, vortex)) == NULL)
			return -ENOMEM;
		snprintf(kcontrol->id.name, sizeof(kcontrol->id.name),
			"%s Playback Volume", EqBandLabels[i]);
		kcontrol->private_value = i;
		if ((err = snd_ctl_add(vortex->card, kcontrol)) < 0)
			return err;
		//vortex->eqctrl[i] = kcontrol;
	}
	/* EQ band levels */
	if ((kcontrol = snd_ctl_new1(&vortex_levels_kcontrol, vortex)) == NULL)
		return -ENOMEM;
	if ((err = snd_ctl_add(vortex->card, kcontrol)) < 0)
		return err;

	return 0;
}

static int vortex_eq_free(vortex_t * vortex)
{
	/*
	   //FIXME: segfault because vortex->eqctrl[i] == 4
	   int i;
	   for (i=0; i<10; i++) {
	   if (vortex->eqctrl[i])
	   snd_ctl_remove(vortex->card, vortex->eqctrl[i]);
	   }
	 */
	vortex_Eqlzr_shutdown(vortex);
	return 0;
}

/* End */