forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathsb16_csp.c
1203 lines (1047 loc) · 32.8 KB
/
sb16_csp.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
/*
* Copyright (c) 1999 by Uros Bizjak <[email protected]>
* Takashi Iwai <[email protected]>
*
* SB16ASP/AWE32 CSP control
*
* CSP microcode loader:
* alsa-tools/sb16_csp/
*
* 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
*
*/
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/info.h>
#include <sound/sb16_csp.h>
#include <sound/initval.h>
MODULE_AUTHOR("Uros Bizjak <[email protected]>");
MODULE_DESCRIPTION("ALSA driver for SB16 Creative Signal Processor");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE("sb16/mulaw_main.csp");
MODULE_FIRMWARE("sb16/alaw_main.csp");
MODULE_FIRMWARE("sb16/ima_adpcm_init.csp");
MODULE_FIRMWARE("sb16/ima_adpcm_playback.csp");
MODULE_FIRMWARE("sb16/ima_adpcm_capture.csp");
#ifdef SNDRV_LITTLE_ENDIAN
#define CSP_HDR_VALUE(a,b,c,d) ((a) | ((b)<<8) | ((c)<<16) | ((d)<<24))
#else
#define CSP_HDR_VALUE(a,b,c,d) ((d) | ((c)<<8) | ((b)<<16) | ((a)<<24))
#endif
#define RIFF_HEADER CSP_HDR_VALUE('R', 'I', 'F', 'F')
#define CSP__HEADER CSP_HDR_VALUE('C', 'S', 'P', ' ')
#define LIST_HEADER CSP_HDR_VALUE('L', 'I', 'S', 'T')
#define FUNC_HEADER CSP_HDR_VALUE('f', 'u', 'n', 'c')
#define CODE_HEADER CSP_HDR_VALUE('c', 'o', 'd', 'e')
#define INIT_HEADER CSP_HDR_VALUE('i', 'n', 'i', 't')
#define MAIN_HEADER CSP_HDR_VALUE('m', 'a', 'i', 'n')
/*
* RIFF data format
*/
struct riff_header {
__u32 name;
__u32 len;
};
struct desc_header {
struct riff_header info;
__u16 func_nr;
__u16 VOC_type;
__u16 flags_play_rec;
__u16 flags_16bit_8bit;
__u16 flags_stereo_mono;
__u16 flags_rates;
};
/*
* prototypes
*/
static void snd_sb_csp_free(struct snd_hwdep *hw);
static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file);
static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg);
static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file);
static int csp_detect(struct snd_sb *chip, int *version);
static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val);
static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val);
static int read_register(struct snd_sb *chip, unsigned char reg);
static int set_mode_register(struct snd_sb *chip, unsigned char mode);
static int get_version(struct snd_sb *chip);
static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
struct snd_sb_csp_microcode __user * code);
static int snd_sb_csp_unload(struct snd_sb_csp * p);
static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags);
static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode);
static int snd_sb_csp_check_version(struct snd_sb_csp * p);
static int snd_sb_csp_use(struct snd_sb_csp * p);
static int snd_sb_csp_unuse(struct snd_sb_csp * p);
static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels);
static int snd_sb_csp_stop(struct snd_sb_csp * p);
static int snd_sb_csp_pause(struct snd_sb_csp * p);
static int snd_sb_csp_restart(struct snd_sb_csp * p);
static int snd_sb_qsound_build(struct snd_sb_csp * p);
static void snd_sb_qsound_destroy(struct snd_sb_csp * p);
static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p);
static int init_proc_entry(struct snd_sb_csp * p, int device);
static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer);
/*
* Detect CSP chip and create a new instance
*/
int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep)
{
struct snd_sb_csp *p;
int uninitialized_var(version);
int err;
struct snd_hwdep *hw;
if (rhwdep)
*rhwdep = NULL;
if (csp_detect(chip, &version))
return -ENODEV;
if ((err = snd_hwdep_new(chip->card, "SB16-CSP", device, &hw)) < 0)
return err;
if ((p = kzalloc(sizeof(*p), GFP_KERNEL)) == NULL) {
snd_device_free(chip->card, hw);
return -ENOMEM;
}
p->chip = chip;
p->version = version;
/* CSP operators */
p->ops.csp_use = snd_sb_csp_use;
p->ops.csp_unuse = snd_sb_csp_unuse;
p->ops.csp_autoload = snd_sb_csp_autoload;
p->ops.csp_start = snd_sb_csp_start;
p->ops.csp_stop = snd_sb_csp_stop;
p->ops.csp_qsound_transfer = snd_sb_csp_qsound_transfer;
mutex_init(&p->access_mutex);
sprintf(hw->name, "CSP v%d.%d", (version >> 4), (version & 0x0f));
hw->iface = SNDRV_HWDEP_IFACE_SB16CSP;
hw->private_data = p;
hw->private_free = snd_sb_csp_free;
/* operators - only write/ioctl */
hw->ops.open = snd_sb_csp_open;
hw->ops.ioctl = snd_sb_csp_ioctl;
hw->ops.release = snd_sb_csp_release;
/* create a proc entry */
init_proc_entry(p, device);
if (rhwdep)
*rhwdep = hw;
return 0;
}
/*
* free_private for hwdep instance
*/
static void snd_sb_csp_free(struct snd_hwdep *hwdep)
{
int i;
struct snd_sb_csp *p = hwdep->private_data;
if (p) {
if (p->running & SNDRV_SB_CSP_ST_RUNNING)
snd_sb_csp_stop(p);
for (i = 0; i < ARRAY_SIZE(p->csp_programs); ++i)
release_firmware(p->csp_programs[i]);
kfree(p);
}
}
/* ------------------------------ */
/*
* open the device exclusively
*/
static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file)
{
struct snd_sb_csp *p = hw->private_data;
return (snd_sb_csp_use(p));
}
/*
* ioctl for hwdep device:
*/
static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg)
{
struct snd_sb_csp *p = hw->private_data;
struct snd_sb_csp_info info;
struct snd_sb_csp_start start_info;
int err;
if (snd_BUG_ON(!p))
return -EINVAL;
if (snd_sb_csp_check_version(p))
return -ENODEV;
switch (cmd) {
/* get information */
case SNDRV_SB_CSP_IOCTL_INFO:
memset(&info, 0, sizeof(info));
*info.codec_name = *p->codec_name;
info.func_nr = p->func_nr;
info.acc_format = p->acc_format;
info.acc_channels = p->acc_channels;
info.acc_width = p->acc_width;
info.acc_rates = p->acc_rates;
info.csp_mode = p->mode;
info.run_channels = p->run_channels;
info.run_width = p->run_width;
info.version = p->version;
info.state = p->running;
if (copy_to_user((void __user *)arg, &info, sizeof(info)))
err = -EFAULT;
else
err = 0;
break;
/* load CSP microcode */
case SNDRV_SB_CSP_IOCTL_LOAD_CODE:
err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
-EBUSY : snd_sb_csp_riff_load(p, (struct snd_sb_csp_microcode __user *) arg));
break;
case SNDRV_SB_CSP_IOCTL_UNLOAD_CODE:
err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
-EBUSY : snd_sb_csp_unload(p));
break;
/* change CSP running state */
case SNDRV_SB_CSP_IOCTL_START:
if (copy_from_user(&start_info, (void __user *) arg, sizeof(start_info)))
err = -EFAULT;
else
err = snd_sb_csp_start(p, start_info.sample_width, start_info.channels);
break;
case SNDRV_SB_CSP_IOCTL_STOP:
err = snd_sb_csp_stop(p);
break;
case SNDRV_SB_CSP_IOCTL_PAUSE:
err = snd_sb_csp_pause(p);
break;
case SNDRV_SB_CSP_IOCTL_RESTART:
err = snd_sb_csp_restart(p);
break;
default:
err = -ENOTTY;
break;
}
return err;
}
/*
* close the device
*/
static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file)
{
struct snd_sb_csp *p = hw->private_data;
return (snd_sb_csp_unuse(p));
}
/* ------------------------------ */
/*
* acquire device
*/
static int snd_sb_csp_use(struct snd_sb_csp * p)
{
mutex_lock(&p->access_mutex);
if (p->used) {
mutex_unlock(&p->access_mutex);
return -EAGAIN;
}
p->used++;
mutex_unlock(&p->access_mutex);
return 0;
}
/*
* release device
*/
static int snd_sb_csp_unuse(struct snd_sb_csp * p)
{
mutex_lock(&p->access_mutex);
p->used--;
mutex_unlock(&p->access_mutex);
return 0;
}
/*
* load microcode via ioctl:
* code is user-space pointer
*/
static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
struct snd_sb_csp_microcode __user * mcode)
{
struct snd_sb_csp_mc_header info;
unsigned char __user *data_ptr;
unsigned char __user *data_end;
unsigned short func_nr = 0;
struct riff_header file_h, item_h, code_h;
__u32 item_type;
struct desc_header funcdesc_h;
unsigned long flags;
int err;
if (copy_from_user(&info, mcode, sizeof(info)))
return -EFAULT;
data_ptr = mcode->data;
if (copy_from_user(&file_h, data_ptr, sizeof(file_h)))
return -EFAULT;
if ((file_h.name != RIFF_HEADER) ||
(le32_to_cpu(file_h.len) >= SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE - sizeof(file_h))) {
snd_printd("%s: Invalid RIFF header\n", __func__);
return -EINVAL;
}
data_ptr += sizeof(file_h);
data_end = data_ptr + le32_to_cpu(file_h.len);
if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
return -EFAULT;
if (item_type != CSP__HEADER) {
snd_printd("%s: Invalid RIFF file type\n", __func__);
return -EINVAL;
}
data_ptr += sizeof (item_type);
for (; data_ptr < data_end; data_ptr += le32_to_cpu(item_h.len)) {
if (copy_from_user(&item_h, data_ptr, sizeof(item_h)))
return -EFAULT;
data_ptr += sizeof(item_h);
if (item_h.name != LIST_HEADER)
continue;
if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
return -EFAULT;
switch (item_type) {
case FUNC_HEADER:
if (copy_from_user(&funcdesc_h, data_ptr + sizeof(item_type), sizeof(funcdesc_h)))
return -EFAULT;
func_nr = le16_to_cpu(funcdesc_h.func_nr);
break;
case CODE_HEADER:
if (func_nr != info.func_req)
break; /* not required function, try next */
data_ptr += sizeof(item_type);
/* destroy QSound mixer element */
if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
snd_sb_qsound_destroy(p);
}
/* Clear all flags */
p->running = 0;
p->mode = 0;
/* load microcode blocks */
for (;;) {
if (data_ptr >= data_end)
return -EINVAL;
if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
return -EFAULT;
/* init microcode blocks */
if (code_h.name != INIT_HEADER)
break;
data_ptr += sizeof(code_h);
err = snd_sb_csp_load_user(p, data_ptr, le32_to_cpu(code_h.len),
SNDRV_SB_CSP_LOAD_INITBLOCK);
if (err)
return err;
data_ptr += le32_to_cpu(code_h.len);
}
/* main microcode block */
if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
return -EFAULT;
if (code_h.name != MAIN_HEADER) {
snd_printd("%s: Missing 'main' microcode\n", __func__);
return -EINVAL;
}
data_ptr += sizeof(code_h);
err = snd_sb_csp_load_user(p, data_ptr,
le32_to_cpu(code_h.len), 0);
if (err)
return err;
/* fill in codec header */
strlcpy(p->codec_name, info.codec_name, sizeof(p->codec_name));
p->func_nr = func_nr;
p->mode = le16_to_cpu(funcdesc_h.flags_play_rec);
switch (le16_to_cpu(funcdesc_h.VOC_type)) {
case 0x0001: /* QSound decoder */
if (le16_to_cpu(funcdesc_h.flags_play_rec) == SNDRV_SB_CSP_MODE_DSP_WRITE) {
if (snd_sb_qsound_build(p) == 0)
/* set QSound flag and clear all other mode flags */
p->mode = SNDRV_SB_CSP_MODE_QSOUND;
}
p->acc_format = 0;
break;
case 0x0006: /* A Law codec */
p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
break;
case 0x0007: /* Mu Law codec */
p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
break;
case 0x0011: /* what Creative thinks is IMA ADPCM codec */
case 0x0200: /* Creative ADPCM codec */
p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
break;
case 201: /* Text 2 Speech decoder */
/* TODO: Text2Speech handling routines */
p->acc_format = 0;
break;
case 0x0202: /* Fast Speech 8 codec */
case 0x0203: /* Fast Speech 10 codec */
p->acc_format = SNDRV_PCM_FMTBIT_SPECIAL;
break;
default: /* other codecs are unsupported */
p->acc_format = p->acc_width = p->acc_rates = 0;
p->mode = 0;
snd_printd("%s: Unsupported CSP codec type: 0x%04x\n",
__func__,
le16_to_cpu(funcdesc_h.VOC_type));
return -EINVAL;
}
p->acc_channels = le16_to_cpu(funcdesc_h.flags_stereo_mono);
p->acc_width = le16_to_cpu(funcdesc_h.flags_16bit_8bit);
p->acc_rates = le16_to_cpu(funcdesc_h.flags_rates);
/* Decouple CSP from IRQ and DMAREQ lines */
spin_lock_irqsave(&p->chip->reg_lock, flags);
set_mode_register(p->chip, 0xfc);
set_mode_register(p->chip, 0x00);
spin_unlock_irqrestore(&p->chip->reg_lock, flags);
/* finished loading successfully */
p->running = SNDRV_SB_CSP_ST_LOADED; /* set LOADED flag */
return 0;
}
}
snd_printd("%s: Function #%d not found\n", __func__, info.func_req);
return -EINVAL;
}
/*
* unload CSP microcode
*/
static int snd_sb_csp_unload(struct snd_sb_csp * p)
{
if (p->running & SNDRV_SB_CSP_ST_RUNNING)
return -EBUSY;
if (!(p->running & SNDRV_SB_CSP_ST_LOADED))
return -ENXIO;
/* clear supported formats */
p->acc_format = 0;
p->acc_channels = p->acc_width = p->acc_rates = 0;
/* destroy QSound mixer element */
if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
snd_sb_qsound_destroy(p);
}
/* clear all flags */
p->running = 0;
p->mode = 0;
return 0;
}
/*
* send command sequence to DSP
*/
static inline int command_seq(struct snd_sb *chip, const unsigned char *seq, int size)
{
int i;
for (i = 0; i < size; i++) {
if (!snd_sbdsp_command(chip, seq[i]))
return -EIO;
}
return 0;
}
/*
* set CSP codec parameter
*/
static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val)
{
unsigned char dsp_cmd[3];
dsp_cmd[0] = 0x05; /* CSP set codec parameter */
dsp_cmd[1] = val; /* Parameter value */
dsp_cmd[2] = par; /* Parameter */
command_seq(chip, dsp_cmd, 3);
snd_sbdsp_command(chip, 0x03); /* DSP read? */
if (snd_sbdsp_get_byte(chip) != par)
return -EIO;
return 0;
}
/*
* set CSP register
*/
static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val)
{
unsigned char dsp_cmd[3];
dsp_cmd[0] = 0x0e; /* CSP set register */
dsp_cmd[1] = reg; /* CSP Register */
dsp_cmd[2] = val; /* value */
return command_seq(chip, dsp_cmd, 3);
}
/*
* read CSP register
* return < 0 -> error
*/
static int read_register(struct snd_sb *chip, unsigned char reg)
{
unsigned char dsp_cmd[2];
dsp_cmd[0] = 0x0f; /* CSP read register */
dsp_cmd[1] = reg; /* CSP Register */
command_seq(chip, dsp_cmd, 2);
return snd_sbdsp_get_byte(chip); /* Read DSP value */
}
/*
* set CSP mode register
*/
static int set_mode_register(struct snd_sb *chip, unsigned char mode)
{
unsigned char dsp_cmd[2];
dsp_cmd[0] = 0x04; /* CSP set mode register */
dsp_cmd[1] = mode; /* mode */
return command_seq(chip, dsp_cmd, 2);
}
/*
* Detect CSP
* return 0 if CSP exists.
*/
static int csp_detect(struct snd_sb *chip, int *version)
{
unsigned char csp_test1, csp_test2;
unsigned long flags;
int result = -ENODEV;
spin_lock_irqsave(&chip->reg_lock, flags);
set_codec_parameter(chip, 0x00, 0x00);
set_mode_register(chip, 0xfc); /* 0xfc = ?? */
csp_test1 = read_register(chip, 0x83);
set_register(chip, 0x83, ~csp_test1);
csp_test2 = read_register(chip, 0x83);
if (csp_test2 != (csp_test1 ^ 0xff))
goto __fail;
set_register(chip, 0x83, csp_test1);
csp_test2 = read_register(chip, 0x83);
if (csp_test2 != csp_test1)
goto __fail;
set_mode_register(chip, 0x00); /* 0x00 = ? */
*version = get_version(chip);
snd_sbdsp_reset(chip); /* reset DSP after getversion! */
if (*version >= 0x10 && *version <= 0x1f)
result = 0; /* valid version id */
__fail:
spin_unlock_irqrestore(&chip->reg_lock, flags);
return result;
}
/*
* get CSP version number
*/
static int get_version(struct snd_sb *chip)
{
unsigned char dsp_cmd[2];
dsp_cmd[0] = 0x08; /* SB_DSP_!something! */
dsp_cmd[1] = 0x03; /* get chip version id? */
command_seq(chip, dsp_cmd, 2);
return (snd_sbdsp_get_byte(chip));
}
/*
* check if the CSP version is valid
*/
static int snd_sb_csp_check_version(struct snd_sb_csp * p)
{
if (p->version < 0x10 || p->version > 0x1f) {
snd_printd("%s: Invalid CSP version: 0x%x\n", __func__, p->version);
return 1;
}
return 0;
}
/*
* download microcode to CSP (microcode should have one "main" block).
*/
static int snd_sb_csp_load(struct snd_sb_csp * p, const unsigned char *buf, int size, int load_flags)
{
int status, i;
int err;
int result = -EIO;
unsigned long flags;
spin_lock_irqsave(&p->chip->reg_lock, flags);
snd_sbdsp_command(p->chip, 0x01); /* CSP download command */
if (snd_sbdsp_get_byte(p->chip)) {
snd_printd("%s: Download command failed\n", __func__);
goto __fail;
}
/* Send CSP low byte (size - 1) */
snd_sbdsp_command(p->chip, (unsigned char)(size - 1));
/* Send high byte */
snd_sbdsp_command(p->chip, (unsigned char)((size - 1) >> 8));
/* send microcode sequence */
/* load from kernel space */
while (size--) {
if (!snd_sbdsp_command(p->chip, *buf++))
goto __fail;
}
if (snd_sbdsp_get_byte(p->chip))
goto __fail;
if (load_flags & SNDRV_SB_CSP_LOAD_INITBLOCK) {
i = 0;
/* some codecs (FastSpeech) take some time to initialize */
while (1) {
snd_sbdsp_command(p->chip, 0x03);
status = snd_sbdsp_get_byte(p->chip);
if (status == 0x55 || ++i >= 10)
break;
udelay (10);
}
if (status != 0x55) {
snd_printd("%s: Microcode initialization failed\n", __func__);
goto __fail;
}
} else {
/*
* Read mixer register SB_DSP4_DMASETUP after loading 'main' code.
* Start CSP chip if no 16bit DMA channel is set - some kind
* of autorun or perhaps a bugfix?
*/
spin_lock(&p->chip->mixer_lock);
status = snd_sbmixer_read(p->chip, SB_DSP4_DMASETUP);
spin_unlock(&p->chip->mixer_lock);
if (!(status & (SB_DMASETUP_DMA7 | SB_DMASETUP_DMA6 | SB_DMASETUP_DMA5))) {
err = (set_codec_parameter(p->chip, 0xaa, 0x00) ||
set_codec_parameter(p->chip, 0xff, 0x00));
snd_sbdsp_reset(p->chip); /* really! */
if (err)
goto __fail;
set_mode_register(p->chip, 0xc0); /* c0 = STOP */
set_mode_register(p->chip, 0x70); /* 70 = RUN */
}
}
result = 0;
__fail:
spin_unlock_irqrestore(&p->chip->reg_lock, flags);
return result;
}
static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags)
{
int err;
unsigned char *kbuf;
kbuf = memdup_user(buf, size);
if (IS_ERR(kbuf))
return PTR_ERR(kbuf);
err = snd_sb_csp_load(p, kbuf, size, load_flags);
kfree(kbuf);
return err;
}
static int snd_sb_csp_firmware_load(struct snd_sb_csp *p, int index, int flags)
{
static const char *const names[] = {
"sb16/mulaw_main.csp",
"sb16/alaw_main.csp",
"sb16/ima_adpcm_init.csp",
"sb16/ima_adpcm_playback.csp",
"sb16/ima_adpcm_capture.csp",
};
const struct firmware *program;
BUILD_BUG_ON(ARRAY_SIZE(names) != CSP_PROGRAM_COUNT);
program = p->csp_programs[index];
if (!program) {
int err = request_firmware(&program, names[index],
p->chip->card->dev);
if (err < 0)
return err;
p->csp_programs[index] = program;
}
return snd_sb_csp_load(p, program->data, program->size, flags);
}
/*
* autoload hardware codec if necessary
* return 0 if CSP is loaded and ready to run (p->running != 0)
*/
static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode)
{
unsigned long flags;
int err = 0;
/* if CSP is running or manually loaded then exit */
if (p->running & (SNDRV_SB_CSP_ST_RUNNING | SNDRV_SB_CSP_ST_LOADED))
return -EBUSY;
/* autoload microcode only if requested hardware codec is not already loaded */
if (((1 << pcm_sfmt) & p->acc_format) && (play_rec_mode & p->mode)) {
p->running = SNDRV_SB_CSP_ST_AUTO;
} else {
switch (pcm_sfmt) {
case SNDRV_PCM_FORMAT_MU_LAW:
err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_MULAW, 0);
p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
break;
case SNDRV_PCM_FORMAT_A_LAW:
err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ALAW, 0);
p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
break;
case SNDRV_PCM_FORMAT_IMA_ADPCM:
err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ADPCM_INIT,
SNDRV_SB_CSP_LOAD_INITBLOCK);
if (err)
break;
if (play_rec_mode == SNDRV_SB_CSP_MODE_DSP_WRITE) {
err = snd_sb_csp_firmware_load
(p, CSP_PROGRAM_ADPCM_PLAYBACK, 0);
p->mode = SNDRV_SB_CSP_MODE_DSP_WRITE;
} else {
err = snd_sb_csp_firmware_load
(p, CSP_PROGRAM_ADPCM_CAPTURE, 0);
p->mode = SNDRV_SB_CSP_MODE_DSP_READ;
}
p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
break;
default:
/* Decouple CSP from IRQ and DMAREQ lines */
if (p->running & SNDRV_SB_CSP_ST_AUTO) {
spin_lock_irqsave(&p->chip->reg_lock, flags);
set_mode_register(p->chip, 0xfc);
set_mode_register(p->chip, 0x00);
spin_unlock_irqrestore(&p->chip->reg_lock, flags);
p->running = 0; /* clear autoloaded flag */
}
return -EINVAL;
}
if (err) {
p->acc_format = 0;
p->acc_channels = p->acc_width = p->acc_rates = 0;
p->running = 0; /* clear autoloaded flag */
p->mode = 0;
return (err);
} else {
p->running = SNDRV_SB_CSP_ST_AUTO; /* set autoloaded flag */
p->acc_width = SNDRV_SB_CSP_SAMPLE_16BIT; /* only 16 bit data */
p->acc_channels = SNDRV_SB_CSP_MONO | SNDRV_SB_CSP_STEREO;
p->acc_rates = SNDRV_SB_CSP_RATE_ALL; /* HW codecs accept all rates */
}
}
return (p->running & SNDRV_SB_CSP_ST_AUTO) ? 0 : -ENXIO;
}
/*
* start CSP
*/
static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels)
{
unsigned char s_type; /* sample type */
unsigned char mixL, mixR;
int result = -EIO;
unsigned long flags;
if (!(p->running & (SNDRV_SB_CSP_ST_LOADED | SNDRV_SB_CSP_ST_AUTO))) {
snd_printd("%s: Microcode not loaded\n", __func__);
return -ENXIO;
}
if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
snd_printd("%s: CSP already running\n", __func__);
return -EBUSY;
}
if (!(sample_width & p->acc_width)) {
snd_printd("%s: Unsupported PCM sample width\n", __func__);
return -EINVAL;
}
if (!(channels & p->acc_channels)) {
snd_printd("%s: Invalid number of channels\n", __func__);
return -EINVAL;
}
/* Mute PCM volume */
spin_lock_irqsave(&p->chip->mixer_lock, flags);
mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
spin_lock(&p->chip->reg_lock);
set_mode_register(p->chip, 0xc0); /* c0 = STOP */
set_mode_register(p->chip, 0x70); /* 70 = RUN */
s_type = 0x00;
if (channels == SNDRV_SB_CSP_MONO)
s_type = 0x11; /* 000n 000n (n = 1 if mono) */
if (sample_width == SNDRV_SB_CSP_SAMPLE_8BIT)
s_type |= 0x22; /* 00dX 00dX (d = 1 if 8 bit samples) */
if (set_codec_parameter(p->chip, 0x81, s_type)) {
snd_printd("%s: Set sample type command failed\n", __func__);
goto __fail;
}
if (set_codec_parameter(p->chip, 0x80, 0x00)) {
snd_printd("%s: Codec start command failed\n", __func__);
goto __fail;
}
p->run_width = sample_width;
p->run_channels = channels;
p->running |= SNDRV_SB_CSP_ST_RUNNING;
if (p->mode & SNDRV_SB_CSP_MODE_QSOUND) {
set_codec_parameter(p->chip, 0xe0, 0x01);
/* enable QSound decoder */
set_codec_parameter(p->chip, 0x00, 0xff);
set_codec_parameter(p->chip, 0x01, 0xff);
p->running |= SNDRV_SB_CSP_ST_QSOUND;
/* set QSound startup value */
snd_sb_csp_qsound_transfer(p);
}
result = 0;
__fail:
spin_unlock(&p->chip->reg_lock);
/* restore PCM volume */
snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
return result;
}
/*
* stop CSP
*/
static int snd_sb_csp_stop(struct snd_sb_csp * p)
{
int result;
unsigned char mixL, mixR;
unsigned long flags;
if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
return 0;
/* Mute PCM volume */
spin_lock_irqsave(&p->chip->mixer_lock, flags);
mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
spin_lock(&p->chip->reg_lock);
if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
set_codec_parameter(p->chip, 0xe0, 0x01);
/* disable QSound decoder */
set_codec_parameter(p->chip, 0x00, 0x00);
set_codec_parameter(p->chip, 0x01, 0x00);
p->running &= ~SNDRV_SB_CSP_ST_QSOUND;
}
result = set_mode_register(p->chip, 0xc0); /* c0 = STOP */
spin_unlock(&p->chip->reg_lock);
/* restore PCM volume */
snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
if (!(result))
p->running &= ~(SNDRV_SB_CSP_ST_PAUSED | SNDRV_SB_CSP_ST_RUNNING);
return result;
}
/*
* pause CSP codec and hold DMA transfer
*/
static int snd_sb_csp_pause(struct snd_sb_csp * p)
{
int result;
unsigned long flags;
if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
return -EBUSY;
spin_lock_irqsave(&p->chip->reg_lock, flags);
result = set_codec_parameter(p->chip, 0x80, 0xff);
spin_unlock_irqrestore(&p->chip->reg_lock, flags);
if (!(result))
p->running |= SNDRV_SB_CSP_ST_PAUSED;
return result;
}
/*
* restart CSP codec and resume DMA transfer
*/
static int snd_sb_csp_restart(struct snd_sb_csp * p)
{
int result;
unsigned long flags;
if (!(p->running & SNDRV_SB_CSP_ST_PAUSED))
return -EBUSY;
spin_lock_irqsave(&p->chip->reg_lock, flags);
result = set_codec_parameter(p->chip, 0x80, 0x00);
spin_unlock_irqrestore(&p->chip->reg_lock, flags);
if (!(result))
p->running &= ~SNDRV_SB_CSP_ST_PAUSED;
return result;
}
/* ------------------------------ */
/*
* QSound mixer control for PCM
*/
#define snd_sb_qsound_switch_info snd_ctl_boolean_mono_info
static int snd_sb_qsound_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
ucontrol->value.integer.value[0] = p->q_enabled ? 1 : 0;
return 0;
}
static int snd_sb_qsound_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int change;
unsigned char nval;
nval = ucontrol->value.integer.value[0] & 0x01;
spin_lock_irqsave(&p->q_lock, flags);
change = p->q_enabled != nval;
p->q_enabled = nval;
spin_unlock_irqrestore(&p->q_lock, flags);
return change;
}
static int snd_sb_qsound_space_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 = 0;
uinfo->value.integer.max = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
return 0;
}
static int snd_sb_qsound_space_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);