forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathazt3328.c
2719 lines (2370 loc) · 80.9 KB
/
azt3328.c
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
// SPDX-License-Identifier: GPL-2.0-or-later
/* azt3328.c - driver for Aztech AZF3328 based soundcards (e.g. PCI168).
* Copyright (C) 2002, 2005 - 2011 by Andreas Mohr <andi AT lisas.de>
*
* Framework borrowed from Bart Hartgers's als4000.c.
* Driver developed on PCI168 AP(W) version (PCI rev. 10, subsystem ID 1801),
* found in a Fujitsu-Siemens PC ("Cordant", aluminum case).
* Other versions are:
* PCI168 A(W), sub ID 1800
* PCI168 A/AP, sub ID 8000
* Please give me feedback in case you try my driver with one of these!!
*
* Keywords: Windows XP Vista 168nt4-125.zip 168win95-125.zip PCI 168 download
* (XP/Vista do not support this card at all but every Linux distribution
* has very good support out of the box;
* just to make sure that the right people hit this and get to know that,
* despite the high level of Internet ignorance - as usual :-P -
* about very good support for this card - on Linux!)
*
* NOTES
* Since Aztech does not provide any chipset documentation,
* even on repeated request to various addresses,
* and the answer that was finally given was negative
* (and I was stupid enough to manage to get hold of a PCI168 soundcard
* in the first place >:-P}),
* I was forced to base this driver on reverse engineering
* (3 weeks' worth of evenings filled with driver work).
* (and no, I did NOT go the easy way: to pick up a SB PCI128 for 9 Euros)
*
* It is quite likely that the AZF3328 chip is the PCI cousin of the
* AZF3318 ("azt1020 pnp", "MM Pro 16") ISA chip, given very similar specs.
*
* The AZF3328 chip (note: AZF3328, *not* AZT3328, that's just the driver name
* for compatibility reasons) from Azfin (joint-venture of Aztech and Fincitec,
* Fincitec acquired by National Semiconductor in 2002, together with the
* Fincitec-related company ARSmikro) has the following features:
*
* - compatibility & compliance:
* - Microsoft PC 97 ("PC 97 Hardware Design Guide",
* http://www.microsoft.com/whdc/archive/pcguides.mspx)
* - Microsoft PC 98 Baseline Audio
* - MPU401 UART
* - Sound Blaster Emulation (DOS Box)
* - builtin AC97 conformant codec (SNR over 80dB)
* Note that "conformant" != "compliant"!! this chip's mixer register layout
* *differs* from the standard AC97 layout:
* they chose to not implement the headphone register (which is not a
* problem since it's merely optional), yet when doing this, they committed
* the grave sin of letting other registers follow immediately instead of
* keeping a headphone dummy register, thereby shifting the mixer register
* addresses illegally. So far unfortunately it looks like the very flexible
* ALSA AC97 support is still not enough to easily compensate for such a
* grave layout violation despite all tweaks and quirks mechanisms it offers.
* Well, not quite: now ac97 layer is much improved (bus-specific ops!),
* thus I was able to implement support - it's actually working quite well.
* An interesting item might be Aztech AMR 2800-W, since it's an AC97
* modem card which might reveal the Aztech-specific codec ID which
* we might want to pretend, too. Dito PCI168's brother, PCI368,
* where the advertising datasheet says it's AC97-based and has a
* Digital Enhanced Game Port.
* - builtin genuine OPL3 - verified to work fine, 20080506
* - full duplex 16bit playback/record at independent sampling rate
* - MPU401 (+ legacy address support, claimed by one official spec sheet)
* FIXME: how to enable legacy addr??
* - game port (legacy address support)
* - builtin DirectInput support, helps reduce CPU overhead (interrupt-driven
* features supported). - See common term "Digital Enhanced Game Port"...
* (probably DirectInput 3.0 spec - confirm)
* - builtin 3D enhancement (said to be YAMAHA Ymersion)
* - built-in General DirectX timer having a 20 bits counter
* with 1us resolution (see below!)
* - I2S serial output port for external DAC
* [FIXME: 3.3V or 5V level? maximum rate is 66.2kHz right?]
* - supports 33MHz PCI spec 2.1, PCI power management 1.0, compliant with ACPI
* - supports hardware volume control
* - single chip low cost solution (128 pin QFP)
* - supports programmable Sub-vendor and Sub-system ID [24C02 SEEPROM chip]
* required for Microsoft's logo compliance (FIXME: where?)
* At least the Trident 4D Wave DX has one bit somewhere
* to enable writes to PCI subsystem VID registers, that should be it.
* This might easily be in extended PCI reg space, since PCI168 also has
* some custom data starting at 0x80. What kind of config settings
* are located in our extended PCI space anyway??
* - PCI168 AP(W) card: power amplifier with 4 Watts/channel at 4 Ohms
* [TDA1517P chip]
*
* Note that this driver now is actually *better* than the Windows driver,
* since it additionally supports the card's 1MHz DirectX timer - just try
* the following snd-seq module parameters etc.:
* - options snd-seq seq_default_timer_class=2 seq_default_timer_sclass=0
* seq_default_timer_card=0 seq_client_load=1 seq_default_timer_device=0
* seq_default_timer_subdevice=0 seq_default_timer_resolution=1000000
* - "timidity -iAv -B2,8 -Os -EFreverb=0"
* - "pmidi -p 128:0 jazz.mid"
*
* OPL3 hardware playback testing, try something like:
* cat /proc/asound/hwdep
* and
* aconnect -o
* Then use
* sbiload -Dhw:x,y --opl3 /usr/share/sounds/opl3/std.o3 ......./drums.o3
* where x,y is the xx-yy number as given in hwdep.
* Then try
* pmidi -p a:b jazz.mid
* where a:b is the client number plus 0 usually, as given by aconnect above.
* Oh, and make sure to unmute the FM mixer control (doh!)
* NOTE: power use during OPL3 playback is _VERY_ high (70W --> 90W!)
* despite no CPU activity, possibly due to hindering ACPI idling somehow.
* Shouldn't be a problem of the AZF3328 chip itself, I'd hope.
* Higher PCM / FM mixer levels seem to conflict (causes crackling),
* at least sometimes. Maybe even use with hardware sequencer timer above :)
* adplay/adplug-utils might soon offer hardware-based OPL3 playback, too.
*
* Certain PCI versions of this card are susceptible to DMA traffic underruns
* in some systems (resulting in sound crackling/clicking/popping),
* probably because they don't have a DMA FIFO buffer or so.
* Overview (PCI ID/PCI subID/PCI rev.):
* - no DMA crackling on SiS735: 0x50DC/0x1801/16
* - unknown performance: 0x50DC/0x1801/10
* (well, it's not bad on an Athlon 1800 with now very optimized IRQ handler)
*
* Crackling happens with VIA chipsets or, in my case, an SiS735, which is
* supposed to be very fast and supposed to get rid of crackling much
* better than a VIA, yet ironically I still get crackling, like many other
* people with the same chipset.
* Possible remedies:
* - use speaker (amplifier) output instead of headphone output
* (in case crackling is due to overloaded output clipping)
* - plug card into a different PCI slot, preferably one that isn't shared
* too much (this helps a lot, but not completely!)
* - get rid of PCI VGA card, use AGP instead
* - upgrade or downgrade BIOS
* - fiddle with PCI latency settings (setpci -v -s BUSID latency_timer=XX)
* Not too helpful.
* - Disable ACPI/power management/"Auto Detect RAM/PCI Clk" in BIOS
*
* BUGS
* - full-duplex might *still* be problematic, however a recent test was fine
* - (non-bug) "Bass/Treble or 3D settings don't work" - they do get evaluated
* if you set PCM output switch to "pre 3D" instead of "post 3D".
* If this can't be set, then get a mixer application that Isn't Stupid (tm)
* (e.g. kmix, gamix) - unfortunately several are!!
* - locking is not entirely clean, especially the audio stream activity
* ints --> may be racy
* - an _unconnected_ secondary joystick at the gameport will be reported
* to be "active" (floating values, not precisely -1) due to the way we need
* to read the Digital Enhanced Game Port. Not sure whether it is fixable.
*
* TODO
* - use PCI_VDEVICE
* - verify driver status on x86_64
* - test multi-card driver operation
* - (ab)use 1MHz DirectX timer as kernel clocksource
* - test MPU401 MIDI playback etc.
* - add more power micro-management (disable various units of the card
* as long as they're unused, to improve audio quality and save power).
* However this requires more I/O ports which I haven't figured out yet
* and which thus might not even exist...
* The standard suspend/resume functionality could probably make use of
* some improvement, too...
* - figure out what all unknown port bits are responsible for
* - figure out some cleverly evil scheme to possibly make ALSA AC97 code
* fully accept our quite incompatible ""AC97"" mixer and thus save some
* code (but I'm not too optimistic that doing this is possible at all)
* - use MMIO (memory-mapped I/O)? Slightly faster access, e.g. for gameport.
*/
#include <linux/io.h>
#include <linux/init.h>
#include <linux/bug.h> /* WARN_ONCE */
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/gameport.h>
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/rawmidi.h>
#include <sound/mpu401.h>
#include <sound/opl3.h>
#include <sound/initval.h>
/*
* Config switch, to use ALSA's AC97 layer instead of old custom mixer crap.
* If the AC97 compatibility parts we needed to implement locally turn out
* to work nicely, then remove the old implementation eventually.
*/
#define AZF_USE_AC97_LAYER 1
#ifdef AZF_USE_AC97_LAYER
#include <sound/ac97_codec.h>
#endif
#include "azt3328.h"
MODULE_AUTHOR("Andreas Mohr <andi AT lisas.de>");
MODULE_DESCRIPTION("Aztech AZF3328 (PCI168)");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Aztech,AZF3328}}");
#if IS_REACHABLE(CONFIG_GAMEPORT)
#define SUPPORT_GAMEPORT 1
#endif
/* === Debug settings ===
Further diagnostic functionality than the settings below
does not need to be provided, since one can easily write a POSIX shell script
to dump the card's I/O ports (those listed in lspci -v -v):
dump()
{
local descr=$1; local addr=$2; local count=$3
echo "${descr}: ${count} @ ${addr}:"
dd if=/dev/port skip=`printf %d ${addr}` count=${count} bs=1 \
2>/dev/null| hexdump -C
}
and then use something like
"dump joy200 0x200 8", "dump mpu388 0x388 4", "dump joy 0xb400 8",
"dump codec00 0xa800 32", "dump mixer 0xb800 64", "dump synth 0xbc00 8",
possibly within a "while true; do ... sleep 1; done" loop.
Tweaking ports could be done using
VALSTRING="`printf "%02x" $value`"
printf "\x""$VALSTRING"|dd of=/dev/port seek=`printf %d ${addr}` bs=1 \
2>/dev/null
*/
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for AZF3328 soundcard.");
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for AZF3328 soundcard.");
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable AZF3328 soundcard.");
static int seqtimer_scaling = 128;
module_param(seqtimer_scaling, int, 0444);
MODULE_PARM_DESC(seqtimer_scaling, "Set 1024000Hz sequencer timer scale factor (lockup danger!). Default 128.");
enum snd_azf3328_codec_type {
/* warning: fixed indices (also used for bitmask checks!) */
AZF_CODEC_PLAYBACK = 0,
AZF_CODEC_CAPTURE = 1,
AZF_CODEC_I2S_OUT = 2,
};
struct snd_azf3328_codec_data {
unsigned long io_base; /* keep first! (avoid offset calc) */
unsigned int dma_base; /* helper to avoid an indirection in hotpath */
spinlock_t *lock; /* TODO: convert to our own per-codec lock member */
struct snd_pcm_substream *substream;
bool running;
enum snd_azf3328_codec_type type;
const char *name;
};
struct snd_azf3328 {
/* often-used fields towards beginning, then grouped */
unsigned long ctrl_io; /* usually 0xb000, size 128 */
unsigned long game_io; /* usually 0xb400, size 8 */
unsigned long mpu_io; /* usually 0xb800, size 4 */
unsigned long opl3_io; /* usually 0xbc00, size 8 */
unsigned long mixer_io; /* usually 0xc000, size 64 */
spinlock_t reg_lock;
struct snd_timer *timer;
struct snd_pcm *pcm[3];
/* playback, recording and I2S out codecs */
struct snd_azf3328_codec_data codecs[3];
#ifdef AZF_USE_AC97_LAYER
struct snd_ac97 *ac97;
#endif
struct snd_card *card;
struct snd_rawmidi *rmidi;
#ifdef SUPPORT_GAMEPORT
struct gameport *gameport;
u16 axes[4];
#endif
struct pci_dev *pci;
int irq;
/* register 0x6a is write-only, thus need to remember setting.
* If we need to add more registers here, then we might try to fold this
* into some transparent combined shadow register handling with
* CONFIG_PM register storage below, but that's slightly difficult. */
u16 shadow_reg_ctrl_6AH;
#ifdef CONFIG_PM_SLEEP
/* register value containers for power management
* Note: not always full I/O range preserved (similar to Win driver!) */
u32 saved_regs_ctrl[AZF_ALIGN(AZF_IO_SIZE_CTRL_PM) / 4];
u32 saved_regs_game[AZF_ALIGN(AZF_IO_SIZE_GAME_PM) / 4];
u32 saved_regs_mpu[AZF_ALIGN(AZF_IO_SIZE_MPU_PM) / 4];
u32 saved_regs_opl3[AZF_ALIGN(AZF_IO_SIZE_OPL3_PM) / 4];
u32 saved_regs_mixer[AZF_ALIGN(AZF_IO_SIZE_MIXER_PM) / 4];
#endif
};
static const struct pci_device_id snd_azf3328_ids[] = {
{ 0x122D, 0x50DC, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* PCI168/3328 */
{ 0x122D, 0x80DA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* 3328 */
{ 0, }
};
MODULE_DEVICE_TABLE(pci, snd_azf3328_ids);
static int
snd_azf3328_io_reg_setb(unsigned reg, u8 mask, bool do_set)
{
/* Well, strictly spoken, the inb/outb sequence isn't atomic
and would need locking. However we currently don't care
since it potentially complicates matters. */
u8 prev = inb(reg), new;
new = (do_set) ? (prev|mask) : (prev & ~mask);
/* we need to always write the new value no matter whether it differs
* or not, since some register bits don't indicate their setting */
outb(new, reg);
if (new != prev)
return 1;
return 0;
}
static inline void
snd_azf3328_codec_outb(const struct snd_azf3328_codec_data *codec,
unsigned reg,
u8 value
)
{
outb(value, codec->io_base + reg);
}
static inline u8
snd_azf3328_codec_inb(const struct snd_azf3328_codec_data *codec, unsigned reg)
{
return inb(codec->io_base + reg);
}
static inline void
snd_azf3328_codec_outw(const struct snd_azf3328_codec_data *codec,
unsigned reg,
u16 value
)
{
outw(value, codec->io_base + reg);
}
static inline u16
snd_azf3328_codec_inw(const struct snd_azf3328_codec_data *codec, unsigned reg)
{
return inw(codec->io_base + reg);
}
static inline void
snd_azf3328_codec_outl(const struct snd_azf3328_codec_data *codec,
unsigned reg,
u32 value
)
{
outl(value, codec->io_base + reg);
}
static inline void
snd_azf3328_codec_outl_multi(const struct snd_azf3328_codec_data *codec,
unsigned reg, const void *buffer, int count
)
{
unsigned long addr = codec->io_base + reg;
if (count) {
const u32 *buf = buffer;
do {
outl(*buf++, addr);
addr += 4;
} while (--count);
}
}
static inline u32
snd_azf3328_codec_inl(const struct snd_azf3328_codec_data *codec, unsigned reg)
{
return inl(codec->io_base + reg);
}
static inline void
snd_azf3328_ctrl_outb(const struct snd_azf3328 *chip, unsigned reg, u8 value)
{
outb(value, chip->ctrl_io + reg);
}
static inline u8
snd_azf3328_ctrl_inb(const struct snd_azf3328 *chip, unsigned reg)
{
return inb(chip->ctrl_io + reg);
}
static inline u16
snd_azf3328_ctrl_inw(const struct snd_azf3328 *chip, unsigned reg)
{
return inw(chip->ctrl_io + reg);
}
static inline void
snd_azf3328_ctrl_outw(const struct snd_azf3328 *chip, unsigned reg, u16 value)
{
outw(value, chip->ctrl_io + reg);
}
static inline void
snd_azf3328_ctrl_outl(const struct snd_azf3328 *chip, unsigned reg, u32 value)
{
outl(value, chip->ctrl_io + reg);
}
static inline void
snd_azf3328_game_outb(const struct snd_azf3328 *chip, unsigned reg, u8 value)
{
outb(value, chip->game_io + reg);
}
static inline void
snd_azf3328_game_outw(const struct snd_azf3328 *chip, unsigned reg, u16 value)
{
outw(value, chip->game_io + reg);
}
static inline u8
snd_azf3328_game_inb(const struct snd_azf3328 *chip, unsigned reg)
{
return inb(chip->game_io + reg);
}
static inline u16
snd_azf3328_game_inw(const struct snd_azf3328 *chip, unsigned reg)
{
return inw(chip->game_io + reg);
}
static inline void
snd_azf3328_mixer_outw(const struct snd_azf3328 *chip, unsigned reg, u16 value)
{
outw(value, chip->mixer_io + reg);
}
static inline u16
snd_azf3328_mixer_inw(const struct snd_azf3328 *chip, unsigned reg)
{
return inw(chip->mixer_io + reg);
}
#define AZF_MUTE_BIT 0x80
static bool
snd_azf3328_mixer_mute_control(const struct snd_azf3328 *chip,
unsigned reg, bool do_mute
)
{
unsigned long portbase = chip->mixer_io + reg + 1;
bool updated;
/* the mute bit is on the *second* (i.e. right) register of a
* left/right channel setting */
updated = snd_azf3328_io_reg_setb(portbase, AZF_MUTE_BIT, do_mute);
/* indicate whether it was muted before */
return (do_mute) ? !updated : updated;
}
static inline bool
snd_azf3328_mixer_mute_control_master(const struct snd_azf3328 *chip,
bool do_mute
)
{
return snd_azf3328_mixer_mute_control(
chip,
IDX_MIXER_PLAY_MASTER,
do_mute
);
}
static inline bool
snd_azf3328_mixer_mute_control_pcm(const struct snd_azf3328 *chip,
bool do_mute
)
{
return snd_azf3328_mixer_mute_control(
chip,
IDX_MIXER_WAVEOUT,
do_mute
);
}
static inline void
snd_azf3328_mixer_reset(const struct snd_azf3328 *chip)
{
/* reset (close) mixer:
* first mute master volume, then reset
*/
snd_azf3328_mixer_mute_control_master(chip, 1);
snd_azf3328_mixer_outw(chip, IDX_MIXER_RESET, 0x0000);
}
#ifdef AZF_USE_AC97_LAYER
static inline void
snd_azf3328_mixer_ac97_map_unsupported(const struct snd_azf3328 *chip,
unsigned short reg, const char *mode)
{
/* need to add some more or less clever emulation? */
dev_warn(chip->card->dev,
"missing %s emulation for AC97 register 0x%02x!\n",
mode, reg);
}
/*
* Need to have _special_ AC97 mixer hardware register index mapper,
* to compensate for the issue of a rather AC97-incompatible hardware layout.
*/
#define AZF_REG_MASK 0x3f
#define AZF_AC97_REG_UNSUPPORTED 0x8000
#define AZF_AC97_REG_REAL_IO_READ 0x4000
#define AZF_AC97_REG_REAL_IO_WRITE 0x2000
#define AZF_AC97_REG_REAL_IO_RW \
(AZF_AC97_REG_REAL_IO_READ | AZF_AC97_REG_REAL_IO_WRITE)
#define AZF_AC97_REG_EMU_IO_READ 0x0400
#define AZF_AC97_REG_EMU_IO_WRITE 0x0200
#define AZF_AC97_REG_EMU_IO_RW \
(AZF_AC97_REG_EMU_IO_READ | AZF_AC97_REG_EMU_IO_WRITE)
static unsigned short
snd_azf3328_mixer_ac97_map_reg_idx(unsigned short reg)
{
static const struct {
unsigned short azf_reg;
} azf_reg_mapper[] = {
/* Especially when taking into consideration
* mono/stereo-based sequence of azf vs. AC97 control series,
* it's quite obvious that azf simply got rid
* of the AC97_HEADPHONE control at its intended offset,
* thus shifted _all_ controls by one,
* and _then_ simply added it as an FMSYNTH control at the end,
* to make up for the offset.
* This means we'll have to translate indices here as
* needed and then do some tiny AC97 patch action
* (snd_ac97_rename_vol_ctl() etc.) - that's it.
*/
{ /* AC97_RESET */ IDX_MIXER_RESET
| AZF_AC97_REG_REAL_IO_WRITE
| AZF_AC97_REG_EMU_IO_READ },
{ /* AC97_MASTER */ IDX_MIXER_PLAY_MASTER },
/* note large shift: AC97_HEADPHONE to IDX_MIXER_FMSYNTH! */
{ /* AC97_HEADPHONE */ IDX_MIXER_FMSYNTH },
{ /* AC97_MASTER_MONO */ IDX_MIXER_MODEMOUT },
{ /* AC97_MASTER_TONE */ IDX_MIXER_BASSTREBLE },
{ /* AC97_PC_BEEP */ IDX_MIXER_PCBEEP },
{ /* AC97_PHONE */ IDX_MIXER_MODEMIN },
{ /* AC97_MIC */ IDX_MIXER_MIC },
{ /* AC97_LINE */ IDX_MIXER_LINEIN },
{ /* AC97_CD */ IDX_MIXER_CDAUDIO },
{ /* AC97_VIDEO */ IDX_MIXER_VIDEO },
{ /* AC97_AUX */ IDX_MIXER_AUX },
{ /* AC97_PCM */ IDX_MIXER_WAVEOUT },
{ /* AC97_REC_SEL */ IDX_MIXER_REC_SELECT },
{ /* AC97_REC_GAIN */ IDX_MIXER_REC_VOLUME },
{ /* AC97_REC_GAIN_MIC */ AZF_AC97_REG_EMU_IO_RW },
{ /* AC97_GENERAL_PURPOSE */ IDX_MIXER_ADVCTL2 },
{ /* AC97_3D_CONTROL */ IDX_MIXER_ADVCTL1 },
};
unsigned short reg_azf = AZF_AC97_REG_UNSUPPORTED;
/* azf3328 supports the low-numbered and low-spec:ed range
of AC97 regs only */
if (reg <= AC97_3D_CONTROL) {
unsigned short reg_idx = reg / 2;
reg_azf = azf_reg_mapper[reg_idx].azf_reg;
/* a translation-only entry means it's real read/write: */
if (!(reg_azf & ~AZF_REG_MASK))
reg_azf |= AZF_AC97_REG_REAL_IO_RW;
} else {
switch (reg) {
case AC97_POWERDOWN:
reg_azf = AZF_AC97_REG_EMU_IO_RW;
break;
case AC97_EXTENDED_ID:
reg_azf = AZF_AC97_REG_EMU_IO_READ;
break;
case AC97_EXTENDED_STATUS:
/* I don't know what the h*ll AC97 layer
* would consult this _extended_ register for
* given a base-AC97-advertised card,
* but let's just emulate it anyway :-P
*/
reg_azf = AZF_AC97_REG_EMU_IO_RW;
break;
case AC97_VENDOR_ID1:
case AC97_VENDOR_ID2:
reg_azf = AZF_AC97_REG_EMU_IO_READ;
break;
}
}
return reg_azf;
}
static const unsigned short
azf_emulated_ac97_caps =
AC97_BC_DEDICATED_MIC |
AC97_BC_BASS_TREBLE |
/* Headphone is an FM Synth control here */
AC97_BC_HEADPHONE |
/* no AC97_BC_LOUDNESS! */
/* mask 0x7c00 is
vendor-specific 3D enhancement
vendor indicator.
Since there actually _is_ an
entry for Aztech Labs
(13), make damn sure
to indicate it. */
(13 << 10);
static const unsigned short
azf_emulated_ac97_powerdown =
/* pretend everything to be active */
AC97_PD_ADC_STATUS |
AC97_PD_DAC_STATUS |
AC97_PD_MIXER_STATUS |
AC97_PD_VREF_STATUS;
/*
* Emulated, _inofficial_ vendor ID
* (there might be some devices such as the MR 2800-W
* which could reveal the real Aztech AC97 ID).
* We choose to use "AZT" prefix, and then use 1 to indicate PCI168
* (better don't use 0x68 since there's a PCI368 as well).
*/
static const unsigned int
azf_emulated_ac97_vendor_id = 0x415a5401;
static unsigned short
snd_azf3328_mixer_ac97_read(struct snd_ac97 *ac97, unsigned short reg_ac97)
{
const struct snd_azf3328 *chip = ac97->private_data;
unsigned short reg_azf = snd_azf3328_mixer_ac97_map_reg_idx(reg_ac97);
unsigned short reg_val = 0;
bool unsupported = false;
dev_dbg(chip->card->dev, "snd_azf3328_mixer_ac97_read reg_ac97 %u\n",
reg_ac97);
if (reg_azf & AZF_AC97_REG_UNSUPPORTED)
unsupported = true;
else {
if (reg_azf & AZF_AC97_REG_REAL_IO_READ)
reg_val = snd_azf3328_mixer_inw(chip,
reg_azf & AZF_REG_MASK);
else {
/*
* Proceed with dummy I/O read,
* to ensure compatible timing where this may matter.
* (ALSA AC97 layer usually doesn't call I/O functions
* due to intelligent I/O caching anyway)
* Choose a mixer register that's thoroughly unrelated
* to common audio (try to minimize distortion).
*/
snd_azf3328_mixer_inw(chip, IDX_MIXER_SOMETHING30H);
}
if (reg_azf & AZF_AC97_REG_EMU_IO_READ) {
switch (reg_ac97) {
case AC97_RESET:
reg_val |= azf_emulated_ac97_caps;
break;
case AC97_POWERDOWN:
reg_val |= azf_emulated_ac97_powerdown;
break;
case AC97_EXTENDED_ID:
case AC97_EXTENDED_STATUS:
/* AFAICS we simply can't support anything: */
reg_val |= 0;
break;
case AC97_VENDOR_ID1:
reg_val = azf_emulated_ac97_vendor_id >> 16;
break;
case AC97_VENDOR_ID2:
reg_val = azf_emulated_ac97_vendor_id & 0xffff;
break;
default:
unsupported = true;
break;
}
}
}
if (unsupported)
snd_azf3328_mixer_ac97_map_unsupported(chip, reg_ac97, "read");
return reg_val;
}
static void
snd_azf3328_mixer_ac97_write(struct snd_ac97 *ac97,
unsigned short reg_ac97, unsigned short val)
{
const struct snd_azf3328 *chip = ac97->private_data;
unsigned short reg_azf = snd_azf3328_mixer_ac97_map_reg_idx(reg_ac97);
bool unsupported = false;
dev_dbg(chip->card->dev,
"snd_azf3328_mixer_ac97_write reg_ac97 %u val %u\n",
reg_ac97, val);
if (reg_azf & AZF_AC97_REG_UNSUPPORTED)
unsupported = true;
else {
if (reg_azf & AZF_AC97_REG_REAL_IO_WRITE)
snd_azf3328_mixer_outw(
chip,
reg_azf & AZF_REG_MASK,
val
);
else
if (reg_azf & AZF_AC97_REG_EMU_IO_WRITE) {
switch (reg_ac97) {
case AC97_REC_GAIN_MIC:
case AC97_POWERDOWN:
case AC97_EXTENDED_STATUS:
/*
* Silently swallow these writes.
* Since for most registers our card doesn't
* actually support a comparable feature,
* this is exactly what we should do here.
* The AC97 layer's I/O caching probably
* automatically takes care of all the rest...
* (remembers written values etc.)
*/
break;
default:
unsupported = true;
break;
}
}
}
if (unsupported)
snd_azf3328_mixer_ac97_map_unsupported(chip, reg_ac97, "write");
}
static int
snd_azf3328_mixer_new(struct snd_azf3328 *chip)
{
struct snd_ac97_bus *bus;
struct snd_ac97_template ac97;
static const struct snd_ac97_bus_ops ops = {
.write = snd_azf3328_mixer_ac97_write,
.read = snd_azf3328_mixer_ac97_read,
};
int rc;
memset(&ac97, 0, sizeof(ac97));
ac97.scaps = AC97_SCAP_SKIP_MODEM
| AC97_SCAP_AUDIO /* we support audio! */
| AC97_SCAP_NO_SPDIF;
ac97.private_data = chip;
ac97.pci = chip->pci;
/*
* ALSA's AC97 layer has terrible init crackling issues,
* unfortunately, and since it makes use of AC97_RESET,
* there's no use trying to mute Master Playback proactively.
*/
rc = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus);
if (!rc)
rc = snd_ac97_mixer(bus, &ac97, &chip->ac97);
/*
* Make sure to complain loudly in case of AC97 init failure,
* since failure may happen quite often,
* due to this card being a very quirky AC97 "lookalike".
*/
if (rc)
dev_err(chip->card->dev, "AC97 init failed, err %d!\n", rc);
/* If we return an error here, then snd_card_free() should
* free up any ac97 codecs that got created, as well as the bus.
*/
return rc;
}
#else /* AZF_USE_AC97_LAYER */
static void
snd_azf3328_mixer_write_volume_gradually(const struct snd_azf3328 *chip,
unsigned reg,
unsigned char dst_vol_left,
unsigned char dst_vol_right,
int chan_sel, int delay
)
{
unsigned long portbase = chip->mixer_io + reg;
unsigned char curr_vol_left = 0, curr_vol_right = 0;
int left_change = 0, right_change = 0;
if (chan_sel & SET_CHAN_LEFT) {
curr_vol_left = inb(portbase + 1);
/* take care of muting flag contained in left channel */
if (curr_vol_left & AZF_MUTE_BIT)
dst_vol_left |= AZF_MUTE_BIT;
else
dst_vol_left &= ~AZF_MUTE_BIT;
left_change = (curr_vol_left > dst_vol_left) ? -1 : 1;
}
if (chan_sel & SET_CHAN_RIGHT) {
curr_vol_right = inb(portbase + 0);
right_change = (curr_vol_right > dst_vol_right) ? -1 : 1;
}
do {
if (left_change) {
if (curr_vol_left != dst_vol_left) {
curr_vol_left += left_change;
outb(curr_vol_left, portbase + 1);
} else
left_change = 0;
}
if (right_change) {
if (curr_vol_right != dst_vol_right) {
curr_vol_right += right_change;
/* during volume change, the right channel is crackling
* somewhat more than the left channel, unfortunately.
* This seems to be a hardware issue. */
outb(curr_vol_right, portbase + 0);
} else
right_change = 0;
}
if (delay)
mdelay(delay);
} while ((left_change) || (right_change));
}
/*
* general mixer element
*/
struct azf3328_mixer_reg {
unsigned reg;
unsigned int lchan_shift, rchan_shift;
unsigned int mask;
unsigned int invert: 1;
unsigned int stereo: 1;
unsigned int enum_c: 4;
};
#define COMPOSE_MIXER_REG(reg,lchan_shift,rchan_shift,mask,invert,stereo,enum_c) \
((reg) | (lchan_shift << 8) | (rchan_shift << 12) | \
(mask << 16) | \
(invert << 24) | \
(stereo << 25) | \
(enum_c << 26))
static void snd_azf3328_mixer_reg_decode(struct azf3328_mixer_reg *r, unsigned long val)
{
r->reg = val & 0xff;
r->lchan_shift = (val >> 8) & 0x0f;
r->rchan_shift = (val >> 12) & 0x0f;
r->mask = (val >> 16) & 0xff;
r->invert = (val >> 24) & 1;
r->stereo = (val >> 25) & 1;
r->enum_c = (val >> 26) & 0x0f;
}
/*
* mixer switches/volumes
*/
#define AZF3328_MIXER_SWITCH(xname, reg, shift, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
.info = snd_azf3328_info_mixer, \
.get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
.private_value = COMPOSE_MIXER_REG(reg, shift, 0, 0x1, invert, 0, 0), \
}
#define AZF3328_MIXER_VOL_STEREO(xname, reg, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
.info = snd_azf3328_info_mixer, \
.get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
.private_value = COMPOSE_MIXER_REG(reg, 8, 0, mask, invert, 1, 0), \
}
#define AZF3328_MIXER_VOL_MONO(xname, reg, mask, is_right_chan) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
.info = snd_azf3328_info_mixer, \
.get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
.private_value = COMPOSE_MIXER_REG(reg, is_right_chan ? 0 : 8, 0, mask, 1, 0, 0), \
}
#define AZF3328_MIXER_VOL_SPECIAL(xname, reg, mask, shift, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
.info = snd_azf3328_info_mixer, \
.get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
.private_value = COMPOSE_MIXER_REG(reg, shift, 0, mask, invert, 0, 0), \
}
#define AZF3328_MIXER_ENUM(xname, reg, enum_c, shift) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
.info = snd_azf3328_info_mixer_enum, \
.get = snd_azf3328_get_mixer_enum, .put = snd_azf3328_put_mixer_enum, \
.private_value = COMPOSE_MIXER_REG(reg, shift, 0, 0, 0, 0, enum_c), \
}
static int
snd_azf3328_info_mixer(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
struct azf3328_mixer_reg reg;
snd_azf3328_mixer_reg_decode(®, kcontrol->private_value);
uinfo->type = reg.mask == 1 ?
SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = reg.stereo + 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = reg.mask;
return 0;
}
static int
snd_azf3328_get_mixer(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
struct azf3328_mixer_reg reg;
u16 oreg, val;
snd_azf3328_mixer_reg_decode(®, kcontrol->private_value);
oreg = snd_azf3328_mixer_inw(chip, reg.reg);
val = (oreg >> reg.lchan_shift) & reg.mask;
if (reg.invert)
val = reg.mask - val;
ucontrol->value.integer.value[0] = val;
if (reg.stereo) {
val = (oreg >> reg.rchan_shift) & reg.mask;
if (reg.invert)
val = reg.mask - val;
ucontrol->value.integer.value[1] = val;
}
dev_dbg(chip->card->dev,
"get: %02x is %04x -> vol %02lx|%02lx (shift %02d|%02d, mask %02x, inv. %d, stereo %d)\n",
reg.reg, oreg,
ucontrol->value.integer.value[0], ucontrol->value.integer.value[1],
reg.lchan_shift, reg.rchan_shift, reg.mask, reg.invert, reg.stereo);
return 0;
}
static int
snd_azf3328_put_mixer(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
struct azf3328_mixer_reg reg;
u16 oreg, nreg, val;
snd_azf3328_mixer_reg_decode(®, kcontrol->private_value);
oreg = snd_azf3328_mixer_inw(chip, reg.reg);
val = ucontrol->value.integer.value[0] & reg.mask;
if (reg.invert)
val = reg.mask - val;
nreg = oreg & ~(reg.mask << reg.lchan_shift);
nreg |= (val << reg.lchan_shift);
if (reg.stereo) {
val = ucontrol->value.integer.value[1] & reg.mask;
if (reg.invert)
val = reg.mask - val;
nreg &= ~(reg.mask << reg.rchan_shift);
nreg |= (val << reg.rchan_shift);
}
if (reg.mask >= 0x07) /* it's a volume control, so better take care */
snd_azf3328_mixer_write_volume_gradually(
chip, reg.reg, nreg >> 8, nreg & 0xff,
/* just set both channels, doesn't matter */
SET_CHAN_LEFT|SET_CHAN_RIGHT,
0);
else
snd_azf3328_mixer_outw(chip, reg.reg, nreg);
dev_dbg(chip->card->dev,
"put: %02x to %02lx|%02lx, oreg %04x; shift %02d|%02d -> nreg %04x; after: %04x\n",
reg.reg, ucontrol->value.integer.value[0], ucontrol->value.integer.value[1],
oreg, reg.lchan_shift, reg.rchan_shift,
nreg, snd_azf3328_mixer_inw(chip, reg.reg));
return (nreg != oreg);
}