forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 17
/
ad1848.c
3065 lines (2586 loc) · 74.1 KB
/
ad1848.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
/*
* sound/oss/ad1848.c
*
* The low level driver for the AD1848/CS4248 codec chip which
* is used for example in the MS Sound System.
*
* The CS4231 which is used in the GUS MAX and some other cards is
* upwards compatible with AD1848 and this driver is able to drive it.
*
* CS4231A and AD1845 are upward compatible with CS4231. However
* the new features of these chips are different.
*
* CS4232 is a PnP audio chip which contains a CS4231A (and SB, MPU).
* CS4232A is an improved version of CS4232.
*
*
*
* Copyright (C) by Hannu Savolainen 1993-1997
*
* OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
* Version 2 (June 1991). See the "COPYING" file distributed with this software
* for more info.
*
*
* Thomas Sailer : ioctl code reworked (vmalloc/vfree removed)
* general sleep/wakeup clean up.
* Alan Cox : reformatted. Fixed SMP bugs. Moved to kernel alloc/free
* of irqs. Use dev_id.
* Christoph Hellwig : adapted to module_init/module_exit
* Aki Laukkanen : added power management support
* Arnaldo C. de Melo : added missing restore_flags in ad1848_resume
* Miguel Freitas : added ISA PnP support
* Alan Cox : Added CS4236->4239 identification
* Daniel T. Cobra : Alernate config/mixer for later chips
* Alan Cox : Merged chip idents and config code
*
* TODO
* APM save restore assist code on IBM thinkpad
*
* Status:
* Tested. Believed fully functional.
*/
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/stddef.h>
#include <linux/slab.h>
#include <linux/isapnp.h>
#include <linux/pnp.h>
#include <linux/spinlock.h>
#include "sound_config.h"
#include "ad1848.h"
#include "ad1848_mixer.h"
typedef struct
{
spinlock_t lock;
int base;
int irq;
int dma1, dma2;
int dual_dma; /* 1, when two DMA channels allocated */
int subtype;
unsigned char MCE_bit;
unsigned char saved_regs[64]; /* Includes extended register space */
int debug_flag;
int audio_flags;
int record_dev, playback_dev;
int xfer_count;
int audio_mode;
int open_mode;
int intr_active;
char *chip_name, *name;
int model;
#define MD_1848 1
#define MD_4231 2
#define MD_4231A 3
#define MD_1845 4
#define MD_4232 5
#define MD_C930 6
#define MD_IWAVE 7
#define MD_4235 8 /* Crystal Audio CS4235 */
#define MD_1845_SSCAPE 9 /* Ensoniq Soundscape PNP*/
#define MD_4236 10 /* 4236 and higher */
#define MD_42xB 11 /* CS 42xB */
#define MD_4239 12 /* CS4239 */
/* Mixer parameters */
int recmask;
int supported_devices, orig_devices;
int supported_rec_devices, orig_rec_devices;
int *levels;
short mixer_reroute[32];
int dev_no;
volatile unsigned long timer_ticks;
int timer_running;
int irq_ok;
mixer_ents *mix_devices;
int mixer_output_port;
} ad1848_info;
typedef struct ad1848_port_info
{
int open_mode;
int speed;
unsigned char speed_bits;
int channels;
int audio_format;
unsigned char format_bits;
}
ad1848_port_info;
static struct address_info cfg;
static int nr_ad1848_devs;
static bool deskpro_xl;
static bool deskpro_m;
static bool soundpro;
static volatile signed char irq2dev[17] = {
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1
};
#ifndef EXCLUDE_TIMERS
static int timer_installed = -1;
#endif
static int loaded;
static int ad_format_mask[13 /*devc->model */ ] =
{
0,
AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW,
AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW, /* AD1845 */
AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
AFMT_U8 | AFMT_S16_LE /* CS4235 */,
AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW /* Ensoniq Soundscape*/,
AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM,
AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM
};
static ad1848_info adev_info[MAX_AUDIO_DEV];
#define io_Index_Addr(d) ((d)->base)
#define io_Indexed_Data(d) ((d)->base+1)
#define io_Status(d) ((d)->base+2)
#define io_Polled_IO(d) ((d)->base+3)
static struct {
unsigned char flags;
#define CAP_F_TIMER 0x01
} capabilities [10 /*devc->model */ ] = {
{0}
,{0} /* MD_1848 */
,{CAP_F_TIMER} /* MD_4231 */
,{CAP_F_TIMER} /* MD_4231A */
,{CAP_F_TIMER} /* MD_1845 */
,{CAP_F_TIMER} /* MD_4232 */
,{0} /* MD_C930 */
,{CAP_F_TIMER} /* MD_IWAVE */
,{0} /* MD_4235 */
,{CAP_F_TIMER} /* MD_1845_SSCAPE */
};
#ifdef CONFIG_PNP
static int isapnp = 1;
static int isapnpjump;
static bool reverse;
static int audio_activated;
#else
static int isapnp;
#endif
static int ad1848_open(int dev, int mode);
static void ad1848_close(int dev);
static void ad1848_output_block(int dev, unsigned long buf, int count, int intrflag);
static void ad1848_start_input(int dev, unsigned long buf, int count, int intrflag);
static int ad1848_prepare_for_output(int dev, int bsize, int bcount);
static int ad1848_prepare_for_input(int dev, int bsize, int bcount);
static void ad1848_halt(int dev);
static void ad1848_halt_input(int dev);
static void ad1848_halt_output(int dev);
static void ad1848_trigger(int dev, int bits);
static irqreturn_t adintr(int irq, void *dev_id);
#ifndef EXCLUDE_TIMERS
static int ad1848_tmr_install(int dev);
static void ad1848_tmr_reprogram(int dev);
#endif
static int ad_read(ad1848_info * devc, int reg)
{
int x;
int timeout = 900000;
while (timeout > 0 && inb(devc->base) == 0x80) /*Are we initializing */
timeout--;
if(reg < 32)
{
outb(((unsigned char) (reg & 0xff) | devc->MCE_bit), io_Index_Addr(devc));
x = inb(io_Indexed_Data(devc));
}
else
{
int xreg, xra;
xreg = (reg & 0xff) - 32;
xra = (((xreg & 0x0f) << 4) & 0xf0) | 0x08 | ((xreg & 0x10) >> 2);
outb(((unsigned char) (23 & 0xff) | devc->MCE_bit), io_Index_Addr(devc));
outb(((unsigned char) (xra & 0xff)), io_Indexed_Data(devc));
x = inb(io_Indexed_Data(devc));
}
return x;
}
static void ad_write(ad1848_info * devc, int reg, int data)
{
int timeout = 900000;
while (timeout > 0 && inb(devc->base) == 0x80) /* Are we initializing */
timeout--;
if(reg < 32)
{
outb(((unsigned char) (reg & 0xff) | devc->MCE_bit), io_Index_Addr(devc));
outb(((unsigned char) (data & 0xff)), io_Indexed_Data(devc));
}
else
{
int xreg, xra;
xreg = (reg & 0xff) - 32;
xra = (((xreg & 0x0f) << 4) & 0xf0) | 0x08 | ((xreg & 0x10) >> 2);
outb(((unsigned char) (23 & 0xff) | devc->MCE_bit), io_Index_Addr(devc));
outb(((unsigned char) (xra & 0xff)), io_Indexed_Data(devc));
outb((unsigned char) (data & 0xff), io_Indexed_Data(devc));
}
}
static void wait_for_calibration(ad1848_info * devc)
{
int timeout = 0;
/*
* Wait until the auto calibration process has finished.
*
* 1) Wait until the chip becomes ready (reads don't return 0x80).
* 2) Wait until the ACI bit of I11 gets on and then off.
*/
timeout = 100000;
while (timeout > 0 && inb(devc->base) == 0x80)
timeout--;
if (inb(devc->base) & 0x80)
printk(KERN_WARNING "ad1848: Auto calibration timed out(1).\n");
timeout = 100;
while (timeout > 0 && !(ad_read(devc, 11) & 0x20))
timeout--;
if (!(ad_read(devc, 11) & 0x20))
return;
timeout = 80000;
while (timeout > 0 && (ad_read(devc, 11) & 0x20))
timeout--;
if (ad_read(devc, 11) & 0x20)
if ((devc->model != MD_1845) && (devc->model != MD_1845_SSCAPE))
printk(KERN_WARNING "ad1848: Auto calibration timed out(3).\n");
}
static void ad_mute(ad1848_info * devc)
{
int i;
unsigned char prev;
/*
* Save old register settings and mute output channels
*/
for (i = 6; i < 8; i++)
{
prev = devc->saved_regs[i] = ad_read(devc, i);
}
}
static void ad_unmute(ad1848_info * devc)
{
}
static void ad_enter_MCE(ad1848_info * devc)
{
int timeout = 1000;
unsigned short prev;
while (timeout > 0 && inb(devc->base) == 0x80) /*Are we initializing */
timeout--;
devc->MCE_bit = 0x40;
prev = inb(io_Index_Addr(devc));
if (prev & 0x40)
{
return;
}
outb((devc->MCE_bit), io_Index_Addr(devc));
}
static void ad_leave_MCE(ad1848_info * devc)
{
unsigned char prev, acal;
int timeout = 1000;
while (timeout > 0 && inb(devc->base) == 0x80) /*Are we initializing */
timeout--;
acal = ad_read(devc, 9);
devc->MCE_bit = 0x00;
prev = inb(io_Index_Addr(devc));
outb((0x00), io_Index_Addr(devc)); /* Clear the MCE bit */
if ((prev & 0x40) == 0) /* Not in MCE mode */
{
return;
}
outb((0x00), io_Index_Addr(devc)); /* Clear the MCE bit */
if (acal & 0x08) /* Auto calibration is enabled */
wait_for_calibration(devc);
}
static int ad1848_set_recmask(ad1848_info * devc, int mask)
{
unsigned char recdev;
int i, n;
unsigned long flags;
mask &= devc->supported_rec_devices;
/* Rename the mixer bits if necessary */
for (i = 0; i < 32; i++)
{
if (devc->mixer_reroute[i] != i)
{
if (mask & (1 << i))
{
mask &= ~(1 << i);
mask |= (1 << devc->mixer_reroute[i]);
}
}
}
n = 0;
for (i = 0; i < 32; i++) /* Count selected device bits */
if (mask & (1 << i))
n++;
spin_lock_irqsave(&devc->lock,flags);
if (!soundpro) {
if (n == 0)
mask = SOUND_MASK_MIC;
else if (n != 1) { /* Too many devices selected */
mask &= ~devc->recmask; /* Filter out active settings */
n = 0;
for (i = 0; i < 32; i++) /* Count selected device bits */
if (mask & (1 << i))
n++;
if (n != 1)
mask = SOUND_MASK_MIC;
}
switch (mask) {
case SOUND_MASK_MIC:
recdev = 2;
break;
case SOUND_MASK_LINE:
case SOUND_MASK_LINE3:
recdev = 0;
break;
case SOUND_MASK_CD:
case SOUND_MASK_LINE1:
recdev = 1;
break;
case SOUND_MASK_IMIX:
recdev = 3;
break;
default:
mask = SOUND_MASK_MIC;
recdev = 2;
}
recdev <<= 6;
ad_write(devc, 0, (ad_read(devc, 0) & 0x3f) | recdev);
ad_write(devc, 1, (ad_read(devc, 1) & 0x3f) | recdev);
} else { /* soundpro */
unsigned char val;
int set_rec_bit;
int j;
for (i = 0; i < 32; i++) { /* For each bit */
if ((devc->supported_rec_devices & (1 << i)) == 0)
continue; /* Device not supported */
for (j = LEFT_CHN; j <= RIGHT_CHN; j++) {
if (devc->mix_devices[i][j].nbits == 0) /* Inexistent channel */
continue;
/*
* This is tricky:
* set_rec_bit becomes 1 if the corresponding bit in mask is set
* then it gets flipped if the polarity is inverse
*/
set_rec_bit = ((mask & (1 << i)) != 0) ^ devc->mix_devices[i][j].recpol;
val = ad_read(devc, devc->mix_devices[i][j].recreg);
val &= ~(1 << devc->mix_devices[i][j].recpos);
val |= (set_rec_bit << devc->mix_devices[i][j].recpos);
ad_write(devc, devc->mix_devices[i][j].recreg, val);
}
}
}
spin_unlock_irqrestore(&devc->lock,flags);
/* Rename the mixer bits back if necessary */
for (i = 0; i < 32; i++)
{
if (devc->mixer_reroute[i] != i)
{
if (mask & (1 << devc->mixer_reroute[i]))
{
mask &= ~(1 << devc->mixer_reroute[i]);
mask |= (1 << i);
}
}
}
devc->recmask = mask;
return mask;
}
static void oss_change_bits(ad1848_info *devc, unsigned char *regval,
unsigned char *muteval, int dev, int chn, int newval)
{
unsigned char mask;
int shift;
int mute;
int mutemask;
int set_mute_bit;
set_mute_bit = (newval == 0) ^ devc->mix_devices[dev][chn].mutepol;
if (devc->mix_devices[dev][chn].polarity == 1) /* Reverse */
newval = 100 - newval;
mask = (1 << devc->mix_devices[dev][chn].nbits) - 1;
shift = devc->mix_devices[dev][chn].bitpos;
if (devc->mix_devices[dev][chn].mutepos == 8)
{ /* if there is no mute bit */
mute = 0; /* No mute bit; do nothing special */
mutemask = ~0; /* No mute bit; do nothing special */
}
else
{
mute = (set_mute_bit << devc->mix_devices[dev][chn].mutepos);
mutemask = ~(1 << devc->mix_devices[dev][chn].mutepos);
}
newval = (int) ((newval * mask) + 50) / 100; /* Scale it */
*regval &= ~(mask << shift); /* Clear bits */
*regval |= (newval & mask) << shift; /* Set new value */
*muteval &= mutemask;
*muteval |= mute;
}
static int ad1848_mixer_get(ad1848_info * devc, int dev)
{
if (!((1 << dev) & devc->supported_devices))
return -EINVAL;
dev = devc->mixer_reroute[dev];
return devc->levels[dev];
}
static void ad1848_mixer_set_channel(ad1848_info *devc, int dev, int value, int channel)
{
int regoffs, muteregoffs;
unsigned char val, muteval;
unsigned long flags;
regoffs = devc->mix_devices[dev][channel].regno;
muteregoffs = devc->mix_devices[dev][channel].mutereg;
val = ad_read(devc, regoffs);
if (muteregoffs != regoffs) {
muteval = ad_read(devc, muteregoffs);
oss_change_bits(devc, &val, &muteval, dev, channel, value);
}
else
oss_change_bits(devc, &val, &val, dev, channel, value);
spin_lock_irqsave(&devc->lock,flags);
ad_write(devc, regoffs, val);
devc->saved_regs[regoffs] = val;
if (muteregoffs != regoffs) {
ad_write(devc, muteregoffs, muteval);
devc->saved_regs[muteregoffs] = muteval;
}
spin_unlock_irqrestore(&devc->lock,flags);
}
static int ad1848_mixer_set(ad1848_info * devc, int dev, int value)
{
int left = value & 0x000000ff;
int right = (value & 0x0000ff00) >> 8;
int retvol;
if (dev > 31)
return -EINVAL;
if (!(devc->supported_devices & (1 << dev)))
return -EINVAL;
dev = devc->mixer_reroute[dev];
if (devc->mix_devices[dev][LEFT_CHN].nbits == 0)
return -EINVAL;
if (left > 100)
left = 100;
if (right > 100)
right = 100;
if (devc->mix_devices[dev][RIGHT_CHN].nbits == 0) /* Mono control */
right = left;
retvol = left | (right << 8);
/* Scale volumes */
left = mix_cvt[left];
right = mix_cvt[right];
devc->levels[dev] = retvol;
/*
* Set the left channel
*/
ad1848_mixer_set_channel(devc, dev, left, LEFT_CHN);
/*
* Set the right channel
*/
if (devc->mix_devices[dev][RIGHT_CHN].nbits == 0)
goto out;
ad1848_mixer_set_channel(devc, dev, right, RIGHT_CHN);
out:
return retvol;
}
static void ad1848_mixer_reset(ad1848_info * devc)
{
int i;
char name[32];
unsigned long flags;
devc->mix_devices = &(ad1848_mix_devices[0]);
sprintf(name, "%s_%d", devc->chip_name, nr_ad1848_devs);
for (i = 0; i < 32; i++)
devc->mixer_reroute[i] = i;
devc->supported_rec_devices = MODE1_REC_DEVICES;
switch (devc->model)
{
case MD_4231:
case MD_4231A:
case MD_1845:
case MD_1845_SSCAPE:
devc->supported_devices = MODE2_MIXER_DEVICES;
break;
case MD_C930:
devc->supported_devices = C930_MIXER_DEVICES;
devc->mix_devices = &(c930_mix_devices[0]);
break;
case MD_IWAVE:
devc->supported_devices = MODE3_MIXER_DEVICES;
devc->mix_devices = &(iwave_mix_devices[0]);
break;
case MD_42xB:
case MD_4239:
devc->mix_devices = &(cs42xb_mix_devices[0]);
devc->supported_devices = MODE3_MIXER_DEVICES;
break;
case MD_4232:
case MD_4235:
case MD_4236:
devc->supported_devices = MODE3_MIXER_DEVICES;
break;
case MD_1848:
if (soundpro) {
devc->supported_devices = SPRO_MIXER_DEVICES;
devc->supported_rec_devices = SPRO_REC_DEVICES;
devc->mix_devices = &(spro_mix_devices[0]);
break;
}
default:
devc->supported_devices = MODE1_MIXER_DEVICES;
}
devc->orig_devices = devc->supported_devices;
devc->orig_rec_devices = devc->supported_rec_devices;
devc->levels = load_mixer_volumes(name, default_mixer_levels, 1);
for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
{
if (devc->supported_devices & (1 << i))
ad1848_mixer_set(devc, i, devc->levels[i]);
}
ad1848_set_recmask(devc, SOUND_MASK_MIC);
devc->mixer_output_port = devc->levels[31] | AUDIO_HEADPHONE | AUDIO_LINE_OUT;
spin_lock_irqsave(&devc->lock,flags);
if (!soundpro) {
if (devc->mixer_output_port & AUDIO_SPEAKER)
ad_write(devc, 26, ad_read(devc, 26) & ~0x40); /* Unmute mono out */
else
ad_write(devc, 26, ad_read(devc, 26) | 0x40); /* Mute mono out */
} else {
/*
* From the "wouldn't it be nice if the mixer API had (better)
* support for custom stuff" category
*/
/* Enable surround mode and SB16 mixer */
ad_write(devc, 16, 0x60);
}
spin_unlock_irqrestore(&devc->lock,flags);
}
static int ad1848_mixer_ioctl(int dev, unsigned int cmd, void __user *arg)
{
ad1848_info *devc = mixer_devs[dev]->devc;
int val;
if (cmd == SOUND_MIXER_PRIVATE1)
{
if (get_user(val, (int __user *)arg))
return -EFAULT;
if (val != 0xffff)
{
unsigned long flags;
val &= (AUDIO_SPEAKER | AUDIO_HEADPHONE | AUDIO_LINE_OUT);
devc->mixer_output_port = val;
val |= AUDIO_HEADPHONE | AUDIO_LINE_OUT; /* Always on */
devc->mixer_output_port = val;
spin_lock_irqsave(&devc->lock,flags);
if (val & AUDIO_SPEAKER)
ad_write(devc, 26, ad_read(devc, 26) & ~0x40); /* Unmute mono out */
else
ad_write(devc, 26, ad_read(devc, 26) | 0x40); /* Mute mono out */
spin_unlock_irqrestore(&devc->lock,flags);
}
val = devc->mixer_output_port;
return put_user(val, (int __user *)arg);
}
if (cmd == SOUND_MIXER_PRIVATE2)
{
if (get_user(val, (int __user *)arg))
return -EFAULT;
return(ad1848_control(AD1848_MIXER_REROUTE, val));
}
if (((cmd >> 8) & 0xff) == 'M')
{
if (_SIOC_DIR(cmd) & _SIOC_WRITE)
{
switch (cmd & 0xff)
{
case SOUND_MIXER_RECSRC:
if (get_user(val, (int __user *)arg))
return -EFAULT;
val = ad1848_set_recmask(devc, val);
break;
default:
if (get_user(val, (int __user *)arg))
return -EFAULT;
val = ad1848_mixer_set(devc, cmd & 0xff, val);
break;
}
return put_user(val, (int __user *)arg);
}
else
{
switch (cmd & 0xff)
{
/*
* Return parameters
*/
case SOUND_MIXER_RECSRC:
val = devc->recmask;
break;
case SOUND_MIXER_DEVMASK:
val = devc->supported_devices;
break;
case SOUND_MIXER_STEREODEVS:
val = devc->supported_devices;
if (devc->model != MD_C930)
val &= ~(SOUND_MASK_SPEAKER | SOUND_MASK_IMIX);
break;
case SOUND_MIXER_RECMASK:
val = devc->supported_rec_devices;
break;
case SOUND_MIXER_CAPS:
val=SOUND_CAP_EXCL_INPUT;
break;
default:
val = ad1848_mixer_get(devc, cmd & 0xff);
break;
}
return put_user(val, (int __user *)arg);
}
}
else
return -EINVAL;
}
static int ad1848_set_speed(int dev, int arg)
{
ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
/*
* The sampling speed is encoded in the least significant nibble of I8. The
* LSB selects the clock source (0=24.576 MHz, 1=16.9344 MHz) and other
* three bits select the divisor (indirectly):
*
* The available speeds are in the following table. Keep the speeds in
* the increasing order.
*/
typedef struct
{
int speed;
unsigned char bits;
}
speed_struct;
static speed_struct speed_table[] =
{
{5510, (0 << 1) | 1},
{5510, (0 << 1) | 1},
{6620, (7 << 1) | 1},
{8000, (0 << 1) | 0},
{9600, (7 << 1) | 0},
{11025, (1 << 1) | 1},
{16000, (1 << 1) | 0},
{18900, (2 << 1) | 1},
{22050, (3 << 1) | 1},
{27420, (2 << 1) | 0},
{32000, (3 << 1) | 0},
{33075, (6 << 1) | 1},
{37800, (4 << 1) | 1},
{44100, (5 << 1) | 1},
{48000, (6 << 1) | 0}
};
int i, n, selected = -1;
n = sizeof(speed_table) / sizeof(speed_struct);
if (arg <= 0)
return portc->speed;
if (devc->model == MD_1845 || devc->model == MD_1845_SSCAPE) /* AD1845 has different timer than others */
{
if (arg < 4000)
arg = 4000;
if (arg > 50000)
arg = 50000;
portc->speed = arg;
portc->speed_bits = speed_table[3].bits;
return portc->speed;
}
if (arg < speed_table[0].speed)
selected = 0;
if (arg > speed_table[n - 1].speed)
selected = n - 1;
for (i = 1 /*really */ ; selected == -1 && i < n; i++)
{
if (speed_table[i].speed == arg)
selected = i;
else if (speed_table[i].speed > arg)
{
int diff1, diff2;
diff1 = arg - speed_table[i - 1].speed;
diff2 = speed_table[i].speed - arg;
if (diff1 < diff2)
selected = i - 1;
else
selected = i;
}
}
if (selected == -1)
{
printk(KERN_WARNING "ad1848: Can't find speed???\n");
selected = 3;
}
portc->speed = speed_table[selected].speed;
portc->speed_bits = speed_table[selected].bits;
return portc->speed;
}
static short ad1848_set_channels(int dev, short arg)
{
ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
if (arg != 1 && arg != 2)
return portc->channels;
portc->channels = arg;
return arg;
}
static unsigned int ad1848_set_bits(int dev, unsigned int arg)
{
ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc;
ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc;
static struct format_tbl
{
int format;
unsigned char bits;
}
format2bits[] =
{
{
0, 0
}
,
{
AFMT_MU_LAW, 1
}
,
{
AFMT_A_LAW, 3
}
,
{
AFMT_IMA_ADPCM, 5
}
,
{
AFMT_U8, 0
}
,
{
AFMT_S16_LE, 2
}
,
{
AFMT_S16_BE, 6
}
,
{
AFMT_S8, 0
}
,
{
AFMT_U16_LE, 0
}
,
{
AFMT_U16_BE, 0
}
};
int i, n = sizeof(format2bits) / sizeof(struct format_tbl);
if (arg == 0)
return portc->audio_format;
if (!(arg & ad_format_mask[devc->model]))
arg = AFMT_U8;
portc->audio_format = arg;
for (i = 0; i < n; i++)
if (format2bits[i].format == arg)
{
if ((portc->format_bits = format2bits[i].bits) == 0)
return portc->audio_format = AFMT_U8; /* Was not supported */
return arg;
}
/* Still hanging here. Something must be terribly wrong */
portc->format_bits = 0;
return portc->audio_format = AFMT_U8;
}
static struct audio_driver ad1848_audio_driver =
{
.owner = THIS_MODULE,
.open = ad1848_open,
.close = ad1848_close,
.output_block = ad1848_output_block,
.start_input = ad1848_start_input,
.prepare_for_input = ad1848_prepare_for_input,
.prepare_for_output = ad1848_prepare_for_output,
.halt_io = ad1848_halt,
.halt_input = ad1848_halt_input,
.halt_output = ad1848_halt_output,
.trigger = ad1848_trigger,
.set_speed = ad1848_set_speed,
.set_bits = ad1848_set_bits,
.set_channels = ad1848_set_channels
};
static struct mixer_operations ad1848_mixer_operations =
{
.owner = THIS_MODULE,
.id = "SOUNDPORT",
.name = "AD1848/CS4248/CS4231",
.ioctl = ad1848_mixer_ioctl
};
static int ad1848_open(int dev, int mode)
{
ad1848_info *devc;
ad1848_port_info *portc;
unsigned long flags;
if (dev < 0 || dev >= num_audiodevs)
return -ENXIO;
devc = (ad1848_info *) audio_devs[dev]->devc;
portc = (ad1848_port_info *) audio_devs[dev]->portc;
/* here we don't have to protect against intr */
spin_lock(&devc->lock);
if (portc->open_mode || (devc->open_mode & mode))
{
spin_unlock(&devc->lock);
return -EBUSY;
}
devc->dual_dma = 0;
if (audio_devs[dev]->flags & DMA_DUPLEX)
{
devc->dual_dma = 1;
}
devc->intr_active = 0;
devc->audio_mode = 0;
devc->open_mode |= mode;
portc->open_mode = mode;
spin_unlock(&devc->lock);
ad1848_trigger(dev, 0);
if (mode & OPEN_READ)
devc->record_dev = dev;
if (mode & OPEN_WRITE)
devc->playback_dev = dev;