ALSA: dice: add stream format parameters for TC Electronic Digital Konnekt x32
TC Electronic Digital Konnekt x32 is an application of WaveFront DiceII STD
and doesn't support TCAT extended application protocol. For such devices,
ALSA dice driver needs to have hard-coded parameters for stream formats.
This commit adds stream format parameters for this model. Unfortunately, at
sampling transmission frequencies of 88.2/96.0kHz, I confirmed that current
ALSA dice driver doesn't drive the device appropriately due to detecting
packet discontinuities.
$ journalctl
kernel: snd_dice fw1.0: Detect discontinuity of CIP: 90 80
At the frequencies, the device transfers 16 data blocks per packet and 16
data channels per data block, as a result one packet includes 1032 bytes
if it's not NODATA. However, as long as I checked, the device often
postpone packet transmission and continue with truncated payload than
metadata in isochronous packet header. Below is a sample of sequence I got.
sec cycle bytes CIP1 CIP2
37 3314 1032 0x01100090 0x900449E2
37 3315 8 0x011000A0 0x9004FFFF
37 3316 1032 0x011000A0 0x900461E2
37 3317 1032 0x011000B0 0x900475E2
37 3318 1032 0x011000C0 0x900489E2
37 3319 8 0x011000D0 0x9004FFFF
37 3320 1032 0x011000D0 0x9004A1E2
37 3321 1032 0x011000E0 0x9004B5E2
37 3322 1032 0x011000F0 0x9004C9E2
37 3323 8 0x01100000 0x9004FFFF
37 3324 1032 0x01100000 0x9004E1E2
37 3325 1032 0x01100010 0x9004F5E2
37 3326 1032 0x01100020 0x900409E2
37 3327 8 0x01100030 0x9004FFFF
37 3328 1032 0x01100030 0x900421E2
37 3329 1032 0x01100040 0x900435E2
37 3330 (skip)
37 3331 (skip)
37 3332 (skip)
37 3333 (skip)
37 3334 (skip)
37 3335 (skip)
37 3336 (skip)
37 3337 (skip)
37 3338 (skip)
37 3339 (skip)
37 3340 (skip)
37 3341 (skip)
37 3342 (skip)
37 3343 (skip)
37 3344 (skip)
37 3345 (skip)
37 3346 (skip)
37 3347 (skip)
37 3348 (skip)
37 3349 (skip)
37 3350 (skip)
37 3351 (skip)
37 3352 (skip)
37 3353 (skip)
37 3354 (skip)
37 3355 (skip)
37 3356 (skip)
37 3357 (skip)
37 3358 (skip)
37 3359 (skip)
37 3360 (skip)
37 3361 (skip)
37 3362 (skip)
37 3363 (skip)
37 3364 (skip)
37 3365 (skip)
37 3366 (skip)
37 3367 1032 0x01100050 0x900461E1
37 3368 1032 0x01100060 0x900475E1
37 3369 1032 0x01100070 0x9004A1E1
37 3370 1032 0x01100080 0x9004A1E1 but content of payload is truncated.
37 3371 (skip)
37 3371 1032 0x01100080 0x9004B5E0 detect discontinuity
37 3372 1032 0x01100090 0x9004C9E0
37 3373 1032 0x011000A0 0x9004E1E0
37 3374 1032 0x011000B0 0x9004F5E0
37 3375 1032 0x011000C0 0x900409E0
37 3376 1032 0x011000D0 0x900421E0
37 3377 1032 0x011000E0 0x900435E0
37 3378 1032 0x011000F0 0x900449DF
37 3379 8 0x01100000 0x9004FFFF
37 3380 1032 0x01100000 0x900461DF
37 3381 1032 0x01100010 0x900475DF
37 3382 1032 0x01100020 0x900489DF
37 3383 8 0x01100030 0x9004FFFF
37 3384 1032 0x01100030 0x9004A1DF
37 3385 1032 0x01100040 0x9004B5DF
37 3386 1032 0x01100050 0x9004C9DF
37 3387 8 0x01100060 0x9004FFFF
I cannot confirm this quirks with Windows driver. ALSA dice driver has a
cause if assumed differences between these two drivers are ways of
timestampling to RX packets from the drivers to the device. I've already
reported timestamping quirk of Dice-based devices and this might bring
this issue.
[alsa-devel] Dice packet sequence quirk and ALSA firewire stack in Linux 4.6
http://mailman.alsa-project.org/pipermail/alsa-devel/2016-May/107715.html
Well, nevertheless, I enable ALSA dice driver to work at the frequencies.
This may brings inconvenience to users but I expect developers and users
to fix it.
$ cd linux-firewire-utils/src
$ python2 crpp < /sys/bus/firewire/devices/fw1/config_rom
ROM header and bus information block
-----------------------------------------------------------------
400
040423bb bus_info_length 4, crc_length 4, crc 9147
404
31333934 bus_name "1394"
408
e0ff8112 irmc 1, cmc 1, isc 1, bmc 0, pmc 0, cyc_clk_acc 255,
max_rec 8 (512), max_rom 1, gen 1, spd 2 (S400)
40c
00016604 company_id 000166 |
410
0c232c28 device_id
040c232c28 | EUI-64
000166040c232c28
root directory
-----------------------------------------------------------------
414
0006b6cb directory_length 6, crc 46795
418
03000166 vendor
41c
8100000a --> descriptor leaf at 444
420
17000030 model
424
8100000f --> descriptor leaf at 460
428
0c0087c0 node capabilities per IEEE 1394
42c
d1000001 --> unit directory at 430
unit directory at 430
-----------------------------------------------------------------
430
000476c2 directory_length 4, crc 30402
434
12000166 specifier id
438
13000001 version
43c
17000030 model
440
81000010 --> descriptor leaf at 480
descriptor leaf at 444
-----------------------------------------------------------------
444
0006c490 leaf_length 6, crc 50320
448
00000000 textual descriptor
44c
00000000 minimal ASCII
450
54432045 "TC E"
454
6c656374 "lect"
458
726f6e69 "roni"
45c
63000000 "c"
descriptor leaf at 460
-----------------------------------------------------------------
460
000772b4 leaf_length 7, crc 29364
464
00000000 textual descriptor
468
00000000 minimal ASCII
46c
44696769 "Digi"
470
74616c4b "talK"
474
6f6e6e65 "onne"
478
6b747833 "ktx3"
47c
32000000 "2"
descriptor leaf at 480
-----------------------------------------------------------------
480
000772b4 leaf_length 7, crc 29364
484
00000000 textual descriptor
488
00000000 minimal ASCII
48c
44696769 "Digi"
490
74616c4b "talK"
494
6f6e6e65 "onne"
498
6b747833 "ktx3"
49c
32000000 "2"
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>